A swathing structure, header and corn harvester

Abstract

The utility model discloses a kind of poking structure, header and corn harvester, poking structure includes: poking chain support, including upper cover plate, lower cover plate and the transmission part being set between upper cover plate and lower cover plate;First poking chain, it is set to the transmission part outside;Second poking chain, through the transmission and first poking chain synchronous rotation of transition sprocket assembly, the second poking chain is higher than the upper cover plate setting;Reinforcing plate, it is set to the top of second poking chain, with the poking chain support fixed connection.The utility model poking structure is jointly constituted by two sections of poking chain, structure is more compact, realize double poking chain synchronous transmission by sharing transition sprocket assembly, save independent tensioning device, reduce sprocket pitch, improve header space utilization, increase effective working width, solve traditional structure bloated and cutting width limited problem.Sectional structure can make the cutting width between the two poking chains of header be greater, harvesting efficiency be faster, sectional conveying can guarantee the integrity of corn straw more, reduce the probability that corn is not operated from straw.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural harvesting machinery technology, specifically, it relates to a grain-picking structure, a header, and a corn harvester. Background Technology

[0002] In the field of corn combine harvesters, traditional vertical header clamping and conveying systems generally employ a dual-spring direct tensioning or tension spring tensioning structure. In existing technologies, each reel chain requires an independent tensioning device, resulting in low space utilization and excessively large spacing between adjacent sprockets, severely impacting the effective working width of the header. This structural layout not only limits the area harvested in a single pass but also forces the equipment to perform multiple repetitive operations, significantly reducing harvesting efficiency.

[0003] Existing technologies suffer from the following main drawbacks: First, independent tensioning devices occupy significant installation space, resulting in a bulky overall header structure that prevents compact design. Second, traditional continuous chain layouts lack rigidity, leading to trajectory deviations during prolonged operation, affecting clamping stability and increasing crop shedding rates. Third, multiple tensioning mechanisms require frequent manual adjustments, making maintenance complex and time-consuming, thus increasing operating costs. While industry attempts have attempted optimization by adding guide wheels or improving chain link structures, these solutions often address one issue at the expense of another, either increasing overall machine weight or raising manufacturing costs, failing to fundamentally resolve structural limitations.

[0004] Of particular concern is the physical limitation of traditional integral chain designs. When attempting to increase the cutting width, the lateral deformation of the chain intensifies, severely hindering the development of large-width cutting machines. These issues have become key technical obstacles restricting the improvement of harvesting efficiency, necessitating innovative structural solutions. Utility Model Content

[0005] This utility model provides a harvesting structure, a header, and a corn harvester to solve the problems of small harvesting area and the need for multiple harvesting stages during the harvesting process. It adopts segmented tensioning, which makes the structure more stable and easier to install.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] In a first aspect, the present invention provides a rice-reeling structure, characterized in that it comprises:

[0008] The reeling chain support includes an upper cover plate, a lower cover plate, and a transmission part disposed between the upper cover plate and the lower cover plate;

[0009] The first reeling chain is sleeved on the outside of the transmission part;

[0010] The second reeling chain rotates synchronously with the first reeling chain through the transmission of the transition sprocket assembly, and the second reeling chain is set higher than the upper cover plate;

[0011] A reinforcing plate is disposed above the second reeling chain and is fixedly connected to the reeling chain bracket.

[0012] Preferably, the upper cover plate is provided with a connecting post, and the corresponding position of the reinforcing plate is provided with a first connecting hole. The reinforcing plate and the upper cover plate are fixed to the threaded hole at the top of the connecting post by bolts passing through the first connecting hole.

[0013] Preferably, the upper edge of the connecting post is flush with the upper edge of the transition sprocket assembly.

[0014] Preferably, the lower cover plate and the upper cover plate partially overlap in the projection direction. The lower cover plate has a fixing part at a position beyond the upper cover plate in the direction near the second reel chain. The fixing part has a fixing hole. The corresponding position of the reinforcing plate has a second connecting hole. The fixing bolt passes through the second connecting hole, the transition sprocket assembly and the fixing hole in sequence and is fixed by a nut.

[0015] Preferably, the inner side of the reinforcing plate is provided with a first grooving knife extending towards the reeling chain support. The first grooving knife passes through the interior of the second reeling chain and is located close to the transition sprocket assembly. The cutting edge of the first grooving knife faces the direction of the transition sprocket assembly.

[0016] Preferably, the transition sprocket assembly includes a first gear meshing with a first reel chain and a second gear meshing with a second reel chain. In the working state, the second gear is located above the upper cover plate, and the first gear is located between the upper cover plate and the lower cover plate.

[0017] Preferably, a second grooving cutter is provided between the upper cover plate and the lower cover plate, with the cutting edge of the second grooving cutter close to the transition sprocket assembly.

[0018] Preferably, the cutting edge of the second grooving tool has a tooth shape that matches the shape of the first gear.

[0019] Secondly, this utility model provides a cutting platform, including the reeling structure described above.

[0020] Thirdly, this utility model provides a corn harvester including the seed-picking structure as described above, or the cutting platform as described above.

[0021] By adopting the above technical solution, the corn harvester, header and corn harvester provided by this utility model have the following beneficial effects compared with the prior art.

[0022] (1) The harvesting structure of this utility model consists of two harvesting chains, which are more compact. The synchronous transmission of the two harvesting chains is achieved by sharing a transition sprocket assembly, eliminating the need for an independent tensioning device, reducing the sprocket spacing, improving the utilization rate of the header space, increasing the effective working width, and solving the problems of bulky traditional structures and limited cutting width. The segmented structure allows for a larger cutting width between the two harvesting chains of the header, resulting in faster harvesting efficiency. The segmented conveying also ensures the integrity of the corn stalks and reduces the probability of corn falling off the stalks without processing.

[0023] (2) The present invention is provided with a first grooving knife and a second grooving knife. The first grooving knife is embedded inside the second stalk chain, and the second grooving knife is set next to the transition sprocket assembly. It can clean up the tangled straw or debris in real time, avoid sprocket jamming, reduce failure rate, and adapt to complex working environment.

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0026] Figure 1 This is an exploded perspective view of a sorghum stalk structure according to this utility model;

[0027] Figure 2 This is a front view of a grain-reeling structure according to this utility model;

[0028] Figure 3 This is a three-dimensional view of a reeling structure assembly according to the present invention.

[0029] In the picture:

[0030] 1. Reeling chain bracket; 101. Upper cover plate; 1011. Connecting column; 102. Lower cover plate; 1021. Fixing hole; 103. Transmission unit;

[0031] 2. Reinforcing plate; 201. First connecting hole; 202. Second connecting hole; 203. First grooving tool;

[0032] 3. Second reel chain;

[0033] 4. Transition sprocket assembly; 401. First gear; 402. Second gear;

[0034] 5. Second grooving cutter;

[0035] 6. Bolts;

[0036] 7. Fixing bolts;

[0037] 8. Nuts;

[0038] 9. Sprockets.

[0039] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] [Example 1]

[0045] like Figures 1 to 3As shown, the present invention provides a reeling structure, which mainly includes a reeling chain support 1, a first reeling chain (not shown in the figure), a second reeling chain 3, and a reinforcing plate 2. The reeling chain support 1 includes an upper cover plate 101, a lower cover plate 102, and a transmission part 103 disposed between the upper cover plate 101 and the lower cover plate 102. The first reeling chain is sleeved on the outside of the transmission part 103. The second reeling chain 3 rotates synchronously with the first reeling chain through the transmission of a transition sprocket assembly 4. The reinforcing plate 2 is disposed above the second reeling chain 3 and is fixedly connected to the reeling chain support 1.

[0046] The transition sprocket assembly 4 includes a first gear 401 that meshes with the first reel chain and a second gear 402 that meshes with the second reel chain 3, and is rotatable with a bushing. The split layout of the transition sprocket optimizes the spatial configuration of the transmission unit 103, reduces overall weight, and lowers manufacturing costs. The first reel chain rotates along the transmission unit 103 and the transition sprocket assembly 4, while the second reel chain 3 rotates along the sprocket 9 welded between the transition sprocket assembly 4 and the front support arm.

[0047] The harvesting structure consists of two harvesting chains, resulting in a more compact design. Synchronous transmission of the two chains is achieved through a shared transition sprocket assembly 4, eliminating the need for an independent tensioning device, reducing sprocket spacing, improving header space utilization, increasing the effective working width, and solving the problems of bulky and limited cutting width in traditional structures. The segmented structure allows for a wider cutting width between the two harvesting chains on the header, resulting in faster harvesting efficiency. Segmented conveying also better ensures the integrity of the corn stalks, reducing the probability of corn falling off the stalks before harvesting. Preferably, the second harvesting chain 3 has 38 chains.

[0048] Furthermore, in the working state, the first gear 401 is located above the upper cover plate 101, the second reeling chain 3 is positioned above the upper cover plate 101, and the second gear 402 is located between the upper cover plate 101 and the lower cover plate 102. The inner side of the reinforcing plate 2 is provided with a first grooving blade 203 extending towards the reeling chain support 1. The first grooving blade 203 passes through the interior of the second reeling chain 3 and is positioned close to the transition sprocket assembly 4. The blade of the first grooving blade 203 faces the direction of the transition sprocket assembly 4, especially close to the second gear 402, to ensure that the transition sprocket assembly 4 does not become entangled with straw.

[0049] Furthermore, the upper cover plate 101 is provided with a connecting post 1011, and the corresponding position of the reinforcing plate 2 is provided with a first connecting hole 201. The reinforcing plate 2 and the upper cover plate 101 are fixed to the connecting post 101 by bolts 6 passing through the first connecting hole 201. Preferably, the upper edge of the connecting post 1011 is flush with the upper edge of the transition sprocket assembly 4 to ensure the flatness of the reinforcing plate 2, reduce chain wear caused by assembly errors, and simplify installation and maintenance operations.

[0050] Furthermore, the lower cover plate 102 and the upper cover plate 101 partially overlap in the projection direction. The lower cover plate 102 has a fixing part extending beyond the upper cover plate 101 in the direction near the second reel chain 3. The fixing part has a fixing hole 1021, and the corresponding position of the reinforcing plate 2 has a second connecting hole 202. The fixing bolt 7 passes through the second connecting hole 202, the transition sprocket assembly 4, and the fixing hole 1021 in sequence, and is fixed by the nut 8. The extended fixing part of the lower cover plate 102 forms a multi-point rigid connection with the reinforcing plate 2, which enhances the overall torsional rigidity of the transmission part 103, reduces chain trajectory deviation during operation, and extends the chain service life.

[0051] Furthermore, a second grooving blade 5 is provided between the upper cover plate 101 and the lower cover plate 102. The second grooving blade 5 is close to the transition sprocket assembly 4, and the cutting edge of the second grooving blade 5 has a tooth shape that matches the shape of the first gear 401, which can effectively prevent the first gear 401 from getting tangled in grass. At the same time, the second grooving blade 5 can effectively strengthen the connection between the upper cover plate 101 and the lower cover plate 102, and improve the stability of the reeling structure.

[0052] Power is transmitted through the transmission unit 103 to drive the transition sprocket assembly 4 to rotate. The first gear 401 drives the first reeling chain, and the second gear 402 synchronously drives the second reeling chain 3. The two chains work together to clamp and transport the corn stalks backward. The reinforcing plate 2 suppresses the lateral vibration of the second reeling chain 3, and the first grooving knife 203 removes the straw tangled between the chain links as the chain moves. Tension adjustment is uniformly achieved through the transition sprocket assembly 4, eliminating the need for chain-by-chain operation.

[0053] [Example 2]

[0054] This embodiment provides a header using the reeling structure provided in the previous embodiment. Its specific structure is not the focus of protection of this utility model, so it is omitted.

[0055] [Example 3]

[0056] This embodiment provides a corn harvester that uses the reaping structure or header provided in the aforementioned embodiments. Its specific structure is not the focus of protection of this utility model, so it is omitted.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sorghum-picking structure, characterized in that, include: The reeling chain support includes an upper cover plate, a lower cover plate, and a transmission part disposed between the upper cover plate and the lower cover plate; The first reeling chain is sleeved on the outside of the transmission part; The second reeling chain rotates synchronously with the first reeling chain through the transmission of the transition sprocket assembly, and the second reeling chain is set higher than the upper cover plate; A reinforcing plate is disposed above the second reeling chain and is fixedly connected to the reeling chain bracket.

2. The reed-grass structure as described in claim 1, characterized in that: The upper cover plate is provided with a connecting post, and the corresponding position of the reinforcing plate is provided with a first connecting hole. The reinforcing plate and the upper cover plate are fixed to the threaded hole at the top of the connecting post by bolts passing through the first connecting hole.

3. The reed-grass structure as described in claim 2, characterized in that: The upper edge of the connecting post is flush with the upper edge of the transition sprocket assembly.

4. The reed-grass structure as described in claim 1, characterized in that: The lower cover plate and the upper cover plate partially overlap in the projection direction. The lower cover plate has a fixing part at a position beyond the upper cover plate in the direction near the second reel chain. The fixing part has a fixing hole. The corresponding position of the reinforcing plate has a second connecting hole. The fixing bolt passes through the second connecting hole, the transition sprocket assembly and the fixing hole in sequence, and is fixed by a nut.

5. The reed-grass structure as described in claim 1, characterized in that: The inner side of the reinforcing plate is provided with a first grooving knife extending towards the reeling chain support. The first grooving knife passes through the interior of the second reeling chain and is located close to the transition sprocket assembly. The blade of the first grooving knife faces the direction of the transition sprocket assembly.

6. The rice-reeling structure as described in claim 1, characterized in that: The transition sprocket assembly includes a first gear meshing with a first reel chain and a second gear meshing with a second reel chain. In the working state, the second gear is located above the upper cover plate, and the first gear is located between the upper cover plate and the lower cover plate.

7. The reed-grass structure as described in claim 6, characterized in that: A second grooving cutter is provided between the upper cover plate and the lower cover plate, and the cutting edge of the second grooving cutter is close to the transition sprocket assembly.

8. The reed-grass structure as described in claim 7, characterized in that: The cutting edge of the second grooving cutter has a tooth shape that matches the shape of the second gear.

9. A cutting platform, characterized in that: Includes the threshing structure as described in any one of claims 1-8.

10. A corn harvester, characterized in that: It includes the reeling structure as described in any one of claims 1-8, or the cutting platform as described in claim 9.

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