Low-loss wide-adaptability flexible seedling pulling device

Abstract

The invention discloses a low-loss wide-adaptability flexible seedling pulling device, and relates to the technical field of harvesters, the low-loss wide-adaptability flexible seedling pulling device comprises a seedling pulling rod, the seedling pulling rod is connected with a plurality of seedling pulling elastic tooth assemblies, each seedling pulling elastic tooth assembly comprises an elastic tooth, the root of each elastic tooth is connected with a buckle-shaped connecting piece, and the buckle-shaped connecting pieces are used for fixing the elastic teeth to the seedling pulling rod. An elastic plate is connected to the position, close to the buckle-shaped connecting piece, above the elastic teeth, and the length of the elastic teeth exceeds the length of the elastic plate. Through the triple combination design of the seedling pulling rods, the elastic plates and the elastic teeth, the requirement for harvesting conventional crops can be met, flexible seedling pulling can be achieved for low and lodging crops, and the adaptability of the device to the crops in different growth states is remarkably improved; through the synergistic effect of the flexible elastic teeth and the elastic plate, the impact force on crops can be reduced, and the operation loss rate is effectively reduced; and a quick-release elastic claw structure is adopted, so that the reel elastic claw assembly can be quickly replaced by other reel elastic claw assemblies with higher rigidity, and the universality of the equipment is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of harvesters, in particular to a low-loss and widely applicable flexible reel device. Background Art

[0002] As one of the main food crops in China, soybeans are important grain, oil, and feed agricultural products. Mechanized high-efficiency and low-loss harvesting of soybeans is of great significance for ensuring food security. However, the loss rate of mechanized harvesting by current combine harvesters remains high. Among them, the loss of soybean crops caused by the cutter bar accounts for more than half of the total loss, which has become the core problem restricting the improvement of harvesting efficiency.

[0003] Specific technical defects are as follows: First, the general adaptability is insufficient. Most of the reel tooth components on the cutter bar adopt fixed or difficult-to-replace designs, resulting in a lack of effective adaptation in different crop harvesting scenarios. For example, rapeseed teeth or sorghum teeth have a greater impact on soybean stems, causing serious pod explosion during the feeding process of soybeans, thus resulting in losses. Second, dynamic damage is uncontrollable. The traditional tooth system is too rigid, forming a rigid impact on soybean stems during the reeling process, which will cause problems such as pod explosion and grain loss. Finally, the adaptability to complex working conditions is poor. When harvesting low and lodged crops, the existing reel device has problems such as insufficient ability to lift the crops and inconsistent cutting heights of the stems. At the same time, in the face of complex and rugged terrain, it is difficult for the traditional soybean reel device to achieve precise adjustment of the cutter, resulting in an increase in the missed cutting rate.

[0004] Therefore, there is an urgent need to develop a low-loss and widely applicable flexible reel device to reduce the loss rate of soybean crop harvesting and improve the general adaptability of the cutter bar. Summary of the Invention

[0005] The object of the present invention is to provide a low-loss and widely applicable flexible reel device. Through the triple combination design of the reeling rod, flexible spring plate, and teeth, it can not only meet the harvesting requirements of conventional crops but also achieve flexible reeling for low and lodged crops, significantly improving the adaptability of the device to crops in different growth states. Through the coordinated action of the flexible hollow teeth and the spring plate, the impact force on the crops can be reduced, effectively reducing the operation loss rate. The quick-release tooth structure is adopted, which can quickly adapt to the harvesting requirements of different crops (such as soybeans, wheat, rapeseed, sorghum) without replacing the whole machine, realizing the function expansion of "one machine with multiple uses" and significantly improving the equipment versatility.

[0006] The technical solution adopted by the present invention is as follows: A low-loss and widely applicable flexible reel device includes a reel rod, and a plurality of reel tooth assemblies are connected to the reel rod. Each reel tooth assembly includes a reel tooth, and a loop-shaped connecting piece is connected to the root of the reel tooth. The loop-shaped connecting piece is used to fix the reel tooth to the reel rod. A spring plate is connected above the reel tooth near the loop-shaped connecting piece, and the length of the reel tooth exceeds that of the spring plate.

[0007] Optionally, both the reel tooth and the spring plate are made of flexible materials.

[0008] Optionally, a sheath for protecting the reel rod is sleeved on the reel rod.

[0009] Optionally, the sheath is provided with a fixing device for fixing the sheath to the reel rod.

[0010] Optionally, the fixing device is to provide a plurality of through holes or threaded holes on the reel rod and the sheath, and a plug and pull connecting pin is arranged in the through hole or threaded hole; the plug and pull connecting pin can be bent, the upper end of the plug and pull connecting pin is in a ring shape, and the lower part is made of an elastic material and can be bent in two directions of left and right respectively.

[0011] Optionally, a spring piece connecting buckle is arranged between the loop-shaped connecting piece and the reel rod.

[0012] Optionally, the spring piece connecting buckle is provided with a first hole and a second hole. A first tightening bolt is screwed into the first hole to connect the loop-shaped connecting piece; a second tightening bolt is screwed into the second hole to connect the replaceable sheath and / or the reel rod.

[0013] Optionally, locking nuts are arranged at both ends of the loop-shaped connecting piece, the position of the locking nuts corresponds to the first hole, and a first tightening bolt is screwed into the locking nuts to fix the reel tooth assembly; a through hole for accommodating the second tightening bolt is arranged at the corresponding position of the loop-shaped connecting piece at the second hole.

[0014] Optionally, the reel tooth is of a hollow structure.

[0015] Optionally, the hollow part of the reel tooth is of a triangular, parallelogram or honeycomb structure.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0017] 1. The low-loss and widely applicable flexible crop gathering device provided by the present invention, through the triple combination design of the gathering rod, flexible elastic plate and elastic teeth, can not only meet the harvesting requirements of conventional crops, but also achieve flexible crop gathering for low-growing and lodged crops, significantly improving the adaptability of the device to crops in different growth states.

[0018] 2. The low-loss and widely applicable flexible crop gathering device provided by the present invention, through the synergistic effect of the flexible hollow elastic teeth and the elastic plate, can reduce the impact force on the crops and effectively reduce the operation loss rate.

[0019] 3. The low-loss and widely applicable flexible crop gathering device provided by the present invention adopts a quick-release elastic tooth structure, which can quickly adapt to the harvesting requirements of different crops (such as soybeans, wheat, rapeseed, sorghum) without replacing the whole machine, realizing the function expansion of "one machine with multiple uses" and significantly improving the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described by way of examples with reference to the accompanying drawings, where:

[0021] Figure 1 is the overall structural schematic diagram of the soybean-specific crop gathering elastic tooth device of the gathering board of the present invention;

[0022] Figure 2 is the structural schematic diagram of the board-with-hollow elastic teeth of the present invention;

[0023] Figure 3 is the structural schematic diagram of the elastic sheet connection buckle of the present invention;

[0024] Figure 4 is the installation schematic diagram of the board-with-hollow elastic teeth, elastic sheet connection buckle, easy-to-replace sheath and gathering rod of the present invention;

[0025] Reference signs in the drawings: 1 - crop gathering elastic tooth assembly; 101 - elastic teeth; 102 - elastic plate; 103 - ring-shaped connecting piece; 104 - locking nut; 2 - sheath; 3 - gathering rod; 4 - insertion and connection pin; 5 - elastic sheet connection buckle; 501 - first hole; 502 - second hole; 503 - first tightening bolt; 504 - second tightening bolt 504. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will be described in detail below with reference to the accompanying drawings.

[0027] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0028] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

[0029] A low-loss and widely applicable flexible crop-throwing device, as Figures 1-4 shown, includes a crop-throwing rod 3 which can perform crop-throwing on most soybeans. The crop-throwing rod 3 is connected with a number of crop-throwing spring tooth assemblies 1. The crop-throwing rod 3 is installed and fixed between two sets of support frames at both ends of the crop-throwing wheel main shaft. The crop-throwing spring tooth assemblies 1 are distributed at intervals and connected to the crop-throwing rod 3, and the crop-throwing spring tooth assemblies 1 rotate integrally with the crop-throwing wheel. The crop-throwing spring tooth assembly 1 includes a spring tooth 101 which can perform crop-throwing on lodged crops. The root of the spring tooth 101 is connected with a ring-shaped connecting piece 103, and the spring tooth 101 and the ring-shaped connecting piece 103 are integrally connected. The ring-shaped connecting piece 103 is used to fix the spring tooth 101 to the crop-throwing rod 3, and the ring-shaped connecting piece 103 can be disassembled from the crop-throwing rod 3. In special cases, it can be quickly replaced with a crop-throwing spring tooth assembly 1 suitable for harvesting crops with higher stiffness such as wheat, rapeseed, and sorghum without replacing the whole machine, realizing the function expansion of "one machine with multiple uses" and significantly improving the universality of the equipment. Above the spring tooth 101, a spring plate 102 is connected near the ring-shaped connecting piece 103, and the length of the spring tooth 101 exceeds that of the spring plate 102. During the operation, for harvesting low-stem soybeans, the spring plates 102 on a number of spring teeth 101 are mainly used to send them into the cutting table. Through the triple combination design of the crop-throwing rod 3, the flexible spring plate 102 and the spring tooth 101, it can not only meet the harvesting requirements of conventional crops, but also achieve flexible crop-throwing for low and lodged crops, significantly improving the adaptability of the device to crops in different growth states. Further, the spring tooth 101 and the spring plate 102 are integrally connected and are formed by an integral injection molding process. This method has strong overall structure and excellent operation stability, and can avoid the loosening phenomenon caused by traditional bolt connection during high-speed harvesting; as another implementation method, the spring tooth 101 and the spring plate 102 can also be detachably connected. For example, the spring tooth 101 and the spring plate 102 can be a quick-release buckle structure, that is, a standardized dovetail groove interface is set at the base of the spring tooth 101, and a spring locking mechanism is configured at the corresponding position of the spring plate 102. This design can replace the worn parts separately and reduce the maintenance cost.

[0030] An alternative embodiment is that both the spring teeth 101 and the spring plate 102 are made of flexible materials. This design can buffer the mechanical impact on soybean plants during the harvesting operation through the elastic properties of the materials themselves, effectively reducing the damage to the pods. The flexible structure enables the spring teeth 101 and the spring plate 102 to adaptively deform when contacting the crops, ensuring both the effect of raking the crops and significantly reducing the losses of pod bursting and grain dropping caused by mechanical collisions. At the same time, this flexible design can better adapt to crops in different growth states, including low or slightly lodged soybean plants, improving the overall harvesting quality while ensuring the harvesting efficiency and reducing the yield loss for farmers. Further, the flexible material can be nylon or rubber or polyurethane elastomer. Nylon materials have high mechanical strength and good wear resistance but relatively poor elasticity; rubber materials have good elasticity and buffering and shock absorption performance but poor wear resistance and relatively low mechanical strength; polyurethane elastomers have balanced elasticity and wear resistance but relatively high costs.

[0031] An alternative embodiment is that a sheath 2 for protecting the reel bar 3 is sleeved outside the reel bar 3. The sheath 2 can effectively resist the impact and wear of foreign objects such as crop stalks and gravel on the reel bar 3 during field operations, extending the service life of the reel bar 3. Further, the sheath 2 is made of metal material, which can improve the reliability of the overall structure and is suitable for high-intensity harvesting operations in multi-gravel soil conditions; at the same time, the metal material has good heat dissipation performance and can quickly conduct the frictional heat generated during operation. Further, the reel tooth assembly 1 can be directly installed on the reel bar 3 or on the sheath 2. When the reel tooth assembly 1 is installed on the reel bar 3, the sheath 2 can also protect the positioning of the spring teeth 101.

[0032] An alternative embodiment is that the sheath 2 is provided with a fixing device for fixing the sheath 2 to the reel bar 3, preventing the sheath 2 from rotating relative to the reel bar 3, and further preventing the rotation of the reel tooth assembly 1 installed on the sheath 2, ensuring that the reel tooth assembly 1 always maintains the optimal working angle and avoiding the deviation of the raking trajectory caused by the rotation of the sheath 2.

[0033] An alternative embodiment is that the fixing device is to provide a number of through holes or threaded holes on the reel bar 3 and the sheath 2, and an insertion and removal connecting pin 4 is arranged in the through holes or threaded holes. The insertion and removal connecting pin 4 can stably fix the sheath 2 on the reel bar 3, while retaining the convenience of quick disassembly and assembly, facilitating the quick extraction by manual or special pin-pulling tools to replace the damaged sheath 2 or other types of spring teeth 101, enhancing the low-loss and wide-applicability function of the entire reel. Further, the insertion and removal connecting pin 4 can be bent. The upper end of the insertion and removal connecting pin 4 is in a ring shape, and the lower part is made of elastic material and can be bent in two directions, namely left and right, greatly simplifying the replacement process of the sheath 2.

[0034] An alternative implementation, a spring plate connection buckle 5 is provided between the loop-shaped connecting member 103 and the reel bar 3. The spring plate connection buckle 5 is of an annular structure and is installed on the reel bar 3 or the sheath 2. The spring plate can increase elasticity, reduce the collision force, and avoid pod shattering.

[0035] An alternative implementation, the spring plate connection buckle 5 is provided with a first hole 501 and a second hole 502. A first tightening bolt 503 is screwed into the first hole 501 to connect the loop-shaped connecting member 103; a second tightening bolt 504 is screwed into the second hole 502 to connect the replaceable sheath 2 and / or the reel bar 3. The first tightening bolt 503 and the second tightening bolt 504 are used to prevent the reel tooth assembly 1 from rotating relative to the reel bar 3 and the reel main shaft during operation.

[0036] An alternative implementation, locking nuts 104 are provided at both ends of the loop-shaped connecting member 103. The position of the locking nuts 104 corresponds to the first hole 501, and a first tightening bolt 503 is screwed into the locking nuts 104 to fix the reel tooth assembly 1; the loop-shaped connecting member 103 is provided with a through hole for accommodating the second tightening bolt 504 at the corresponding position of the second hole 502. The reel tooth assembly 1, the spring plate connection buckle 5 and the reel bar 3 are connected by tightening bolts to form an elastic connection, allowing adaptive deflection within a large angle range.

[0037] An alternative implementation, the reel tooth 101 is of a hollow structure, enabling the reel tooth 101 to obtain excellent elastic properties while maintaining the necessary bending stiffness. On the one hand, the hollow reel tooth 101 can reduce the collision force during soybean harvesting and is used for harvesting lodging soybeans; on the other hand, the hollow design can save manufacturing materials and reduce the weight of the reel tooth 101. This design not only solves the problem of excessive rigidity of traditional solid reel teeth 101 but also avoids the defect of insufficient supporting force of a pure flexible structure, significantly reducing the pod shattering rate and grain loss while ensuring efficient reeling.

[0038] An alternative implementation, the hollow part of the reel tooth 101 is of a triangular, parallelogram or honeycomb structure. The triangular hollow structure has the best stress dispersion characteristics and can evenly transmit loads, being particularly suitable for high-intensity reciprocating reeling operations; the parallelogram hollow provides better flexible deformation space longitudinally and has a better effect of lifting lodging crops; while the honeycomb hollow has the best comprehensive performance, maintaining the overall rigidity of the structure and achieving the best lightweight effect through hexagonal units. These three hollow designs can all effectively reduce the weight of the reel tooth 101 and improve the elastic buffering performance. Among them, the honeycomb structure has the highest material utilization rate, the triangular structure has the strongest anti-deformation ability, and the parallelogram structure performs best when operating on lodging crops.

[0039] A low-loss and widely applicable flexible crop lifter provided by the present invention has the following working process:

[0040] When the crop lifter rod 3 rotates or swings under drive, it can lift most of the soybeans. The crop lifter spring tooth assembly 1 is detachably connected to the crop lifter rod 3 through a loop-shaped connecting piece 103 at the end. The movement of the crop lifter rod 3 drives the movement of the crop lifter spring tooth assembly 1 fixed on the crop lifter rod 3 or the sheath 2. When the spring teeth 101 contact the crops, they use flexible materials and hollow structures to achieve buffering, reducing the impact damage to the crops. The spring teeth 101 can lift the lodged soybeans. The spring plate 102 acts in cooperation with the roots of the spring teeth 101 to lift the low-stemmed soybeans. In special cases, without replacing the whole machine, the flexible crop lifter spring tooth assembly 1 can be quickly replaced with a crop lifter spring tooth assembly 1 with higher stiffness suitable for harvesting crops such as wheat, rapeseed, and sorghum. During the whole process, the flexible deformation and hollow design of the spring teeth 101 effectively disperse stress, which can not only adapt to crops with different plant heights and densities, but also reduce power consumption and plant damage.

[0041] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0042] 1. A low-loss and widely applicable flexible crop lifter provided by the present invention, through the triple combination design of a crop lifter rod, a flexible spring plate, and adjustable spring teeth, can not only meet the harvesting requirements of conventional crops, but also achieve flexible crop lifting for low and lodged crops, significantly improving the adaptability of the device to crops in different growth states.

[0043] 2. A low-loss and widely applicable flexible crop lifter provided by the present invention, through the cooperative action of flexible hollow spring teeth and a spring plate, can reduce the impact force on the crops and effectively reduce the operation loss rate.

[0044] 3. A low-loss and widely applicable flexible crop lifter provided by the present invention adopts a quick-release spring tooth structure, which can quickly adapt to the harvesting requirements of different crops (such as soybeans, wheat, rapeseed, sorghum) without replacing the whole machine, realizing the function expansion of "one machine with multiple uses" and significantly improving the versatility of the equipment.

[0045] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

[0046] In the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

Claims

1. A low-loss and widely applicable flexible crop gathering device, characterized in that: It includes a reel bar (3), and a number of reel tooth assemblies (1) are connected to the reel bar (3). The reel tooth assembly (1) includes a tooth (101). The root of the tooth (101) is connected with a loop-shaped connecting piece (103). The loop-shaped connecting piece (103) is used to fix the tooth (101) to the reel bar (3). A spring plate (102) is connected above the tooth (101) near the loop-shaped connecting piece (103). The length of the tooth (101) exceeds that of the spring plate (102).

2. The low-loss and widely applicable flexible reel device according to claim 1, characterized in that: Both the tooth (101) and the spring plate (102) are made of flexible materials.

3. The low-loss wide-applicability flexible reel device according to claim 1, characterized in that: A sheath (2) for protecting the reel bar (3) is sleeved on the reel bar (3).

4. The low-loss wide-applicability flexible header device according to claim 3, characterized in that: The sheath (2) is provided with a fixing device for fixing the sheath (2) to the reel bar (3).

5. The low-loss wide-applicability flexible reel device according to claim 4, wherein: The fixing device is to provide a number of through holes or threaded holes on the reel bar (3) and the sheath (2), and a plugging connecting pin (4) is arranged in the through hole or threaded hole; the plugging connecting pin (4) can be bent. The upper end of the plugging connecting pin (4) is in a ring shape, and the lower part is made of an elastic material and can be bent in two directions, namely left and right respectively.

6. The low-loss and wide-applicability flexible header device according to claim 1, characterized in that: A spring piece connecting buckle (5) is arranged between the loop-shaped connecting piece (103) and the reel bar (3).

7. The low-loss wide-applicability flexible threshing device according to claim 6, characterized in that: The spring piece connecting buckle (5) is provided with a first hole (501) and a second hole (502). A first tightening bolt (503) is screwed into the first hole (501) to connect the loop-shaped connecting piece (103); a second tightening bolt (504) is screwed into the second hole (502) to connect the replaceable sheath (2) and / or the reel bar (3).

8. The low-loss and wide-applicability flexible threshing device according to claim 1, characterized in that: Locking nuts (104) are arranged at both ends of the loop-shaped connecting piece (103). The position of the locking nut (104) corresponds to that of the first hole (501). A first tightening bolt (503) is screwed into the locking nut (104) to fix the reel tooth assembly (1); a through hole for accommodating the second tightening bolt (504) is arranged at the corresponding position of the loop-shaped connecting piece (103) for the second hole (502).

9. The low-loss and wide-applicability flexible header device according to claim 1, wherein: The tooth (101) is of a hollow structure.

10. The low-loss and widely applicable flexible header device according to claim 9, characterized in that: The hollow part of the tooth (101) is in a triangular, parallelogram or honeycomb structure.

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