High-speed crushing and mixing stubble cleaning harrow

Abstract

The utility model provides a high-speed crushing and mixing stubble cleaning harrow which comprises a combined stubble cleaning harrow body composed of an installation frame, a harvesting disc and a rolling disc, and further comprises a separation assembly which comprises a separation sieve arranged on one side of the rolling disc, a connecting rod arranged between the separation sieve and the rolling disc and a torsional spring and is used for separating long straw to prevent the straw from falling into a field; compared with the prior art, by arranging the separation assembly, effective interception of long straw is achieved, the rectangular separation holes formed in the separation sieve can accurately filter out straw with the length exceeding the standard, and the straw is prevented from directly falling into the field; through the combination of the adaptive groove and the combing teeth, when the rolling disc rotates, straw clamped between the separating screen and the rolling disc can be combed neatly, the rolling disc is assisted to conduct secondary smashing on the straw, meanwhile, the separating screen is vibrated through the torsional spring, small straw and soil blocks can fall into soil, and the straw and the soil are mixed more evenly.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment technology, specifically to a high-speed stubble-crushing and stubble-removing harrow. Background Technology

[0002] High-speed stubble-crushing harrows are important agricultural machinery used for farmland treatment. They are mainly used for stubble crushing (crushing crop residues) and soil mixing after crop harvest. They also have functions such as stubble crushing, land preparation, and soil mixing. They are suitable for straw treatment of various crops such as corn, wheat, and soybeans.

[0003] Existing straw crushing and returning machinery has significant shortcomings. Most ordinary straw crushers have poorly designed crushing blades and low rotation speeds, resulting in large differences in the length of the crushed straw. Some straw is too long to mix with the soil, affecting soil structure improvement and fertility enhancement. At the same time, frequent manual stops are required to remove tangled straw with tools or wash the equipment with high-pressure water guns, which not only increases labor intensity but also reduces operational efficiency due to downtime. This is especially true in large-scale operations, which seriously affects the progress of agricultural work. Consequently, the stubble harrow has a poor mixing effect between the crushed straw and the soil, resulting in uneven distribution of straw in the soil, delaying the decomposition process, and reducing the efficiency of returning straw to the field.

[0004] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is the closest prior art. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned shortcomings and provide a high-speed shredding and stubble-crushing harrow.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a high-speed stubble-crushing harrow, comprising a combined stubble-crushing harrow consisting of a mounting frame, a harvesting disc, and a turning disc, and further comprising:

[0007] The separating component comprises a separating screen disposed on one side of the turning disc and a connecting rod and torsion spring disposed between the separating screen and the turning disc, used to separate longer straws to prevent them from falling into the field.

[0008] Furthermore, both the harvesting disc and the tumbling disc are rotatably mounted below the mounting frame, and connecting shafts are fixedly mounted at both ends of the tumbling disc.

[0009] Furthermore, one end of the separating screen is rotatably connected to the connecting shaft via a connecting rod, and one end of the connecting rod is fixedly connected to the separating screen.

[0010] Furthermore, the sidewall of the separating screen is provided with a plurality of rectangular separating holes, and the end of the separating screen near the tumbling disc is provided with a plurality of matching grooves that are adapted to the tumbling disc, and a plurality of combing teeth are provided between the matching grooves.

[0011] Furthermore, the bottom of the separating screen is fixedly provided with symmetrically arranged support columns.

[0012] Furthermore, one end of the connecting rod is provided with a cavity adapted to the connecting shaft, the torsion spring is fixedly disposed in the cavity, one end of the torsion spring is fixedly connected to the inner side wall of the cavity of the connecting rod, and the other end of the torsion spring is fixedly connected to the connecting shaft.

[0013] Compared with the prior art, this utility model has the following beneficial effects:

[0014] This invention effectively intercepts longer straw by setting up a separating component. The rectangular separating holes on the separating screen can accurately filter out straw that exceeds the length limit, preventing it from falling directly into the field. The combination of the adapting groove and the combing teeth can comb the straw stuck between the separating screen and the turning plate neatly when the turning plate rotates, and assist the turning plate in secondary crushing of the straw. At the same time, the torsion spring vibrates the separating screen, allowing smaller straw and soil clods to fall into the soil, making the straw and soil mix more evenly. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the tumbling disc and the separating screen in one embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the separating screen and the connecting rod in one embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the torsion spring and the connecting shaft in one embodiment of the present invention.

[0021] In the diagram: 1. Combined stubble harrow; 101. Mounting frame; 102. Harvesting disc; 103. Tilting disc; 1031. Connecting shaft; 2. Separating assembly; 201. Separating screen; 2011. Separating hole; 2012. Adaptor groove; 2013. Combing teeth; 202. Connecting rod; 203. Support column; 204. Torsion spring. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] Please see Figure 1-5 .

[0026] This utility model provides a high-speed stubble-crushing harrow technical solution: a high-speed stubble-crushing harrow includes a combined stubble-crushing harrow 1 consisting of a mounting frame 101, a harvesting disc 102 and a turning disc 103, and also includes a separating component 2 consisting of a separating screen 201 disposed on one side of the turning disc 103 and a connecting rod 202 and a torsion spring 204 disposed between the separating screen 201 and the turning disc 103, for separating longer straw to prevent it from falling into the field.

[0027] In one embodiment, both the harvesting disc 102 and the tumbling disc 103 are rotatably mounted below the mounting frame 101. Connecting shafts 1031 are fixedly mounted at both ends of the tumbling disc 103. One end of the separating screen 201 is rotatably connected to the connecting shaft 1031 via a connecting rod 202. One end of the connecting rod 202 is fixedly connected to the separating screen 201. A cavity adapted to the connecting shaft 1031 is provided at one end of the connecting rod 202. A torsion spring 204 is fixedly mounted in the cavity. One end of the torsion spring 204 is fixedly connected to the inner sidewall of the cavity of the connecting rod 202, and the other end of the torsion spring 204 is fixedly connected to the connecting shaft 1031.

[0028] This design creates a highly efficient stubble-killing system integrating dynamic separation, intelligent screening, and stable support, significantly improving straw processing quality and equipment reliability. In actual operation, when the rotating disc 103 pulverizes straw at high speed, the separating screen 201, through the elastic connection structure formed by the connecting rod 202 and the torsion spring 204, can adapt to the impact force of the straw. The preload of the torsion spring 204 can be adjusted according to operational needs. When encountering large clumps of straw, the separating screen 201 will deflect outwards by 5-15° around the connecting shaft 1031 under the thrust of the straw, causing the straw clumps to re-enter the rotating disc 103 for secondary processing. Subsequently, under the action of the torsion spring 204, it quickly resets, continuing to intercept excessively long straw. This dynamic process effectively prevents straw from entangled in the equipment.

[0029] In one embodiment, the sidewall of the separating screen 201 is provided with a plurality of rectangular separating holes 2011, and the end of the separating screen 201 near the tumbling disk 103 is provided with a plurality of matching grooves 2012 that are adapted to the tumbling disk 103, and a plurality of combing teeth 2013 are provided between the matching grooves 2012.

[0030] In this design, the rectangular dividing holes 2011 on the side wall of the separating screen 201 adopt a variable aperture design, which can accurately screen the straw length. After being crushed, the straw passes through the dividing holes 2011 under the throwing action of the tumbling disc 103. The shorter, qualified fragments pass through smoothly and fall into the soil, while the overly long straw is intercepted on the outside of the separating screen 201. The adapter groove 2012 near one end of the tumbling disc 103 forms a precise gap of 0.5-1mm with the blades of the tumbling disc 103, which can prevent straw from getting stuck and guide the straw through the dividing holes 2011 by the airflow generated by the rotation of the blades. The combing teeth 2013 between the adapter grooves 2012 are arranged in a spiral shape with a spiral angle of 30-45°. When the tumbling disc 103 rotates, the combing teeth 2013 can peel off the straw wrapped around the tumbling disc 103.

[0031] In one embodiment, the bottom of the separating screen 201 is fixedly provided with symmetrically arranged support columns 203.

[0032] In this design, the support column 203 adopts an elastic hinge structure. Its upper end is fixedly connected to the bottom of the separator 201, and its lower end is equipped with a spherical universal joint that contacts the ground. When the tumbling disc 103 rotates at high speed, the vibration energy transmitted through the connecting shaft 1031 and the torsion spring 204 will excite the support column 203 to produce a slight vertical oscillation. This oscillation is transmitted to the separator 201 through the support column 203, causing the entire structure to produce a high-frequency, small-amplitude vibration, forming an effect similar to a "vibrating screen." When the separator 201 oscillates, the edges of the separator holes 2011 generate a high-frequency impact on the retained straw, breaking the friction between the straw and the separator holes 2011, allowing qualified fragments to pass through quickly, and avoiding blockage of the separator holes 2011 due to straw accumulation. The oscillation causes the separator 201 to vibrate. Dynamic displacement occurs, and the extra-long straw collides with the separating screen 201 under the action of inertia. Some of the extra-long straw will be broken into qualified lengths, while the other part will be shaken to the edge of the separating screen 201 and guided by the combing teeth 2013 to the tumbling disc 103 for secondary crushing.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A high-speed shredding and mulching harrow comprising a combined mulching harrow (1) consisting of a mounting frame (101), a harvesting disc (102) and a tumbling disc (103), characterized in that: It also includes: The separating component (2) consists of a separating screen (201) disposed on one side of the turning plate (103), a connecting rod (202) and a torsion spring (204) disposed between the separating screen (201) and the turning plate (103), and is used to separate longer straws to prevent them from falling into the field.

2. A high-speed pulverizing and mixing mulch rake according to claim 1, characterized in that: The harvesting disc (102) and the tumbling disc (103) are both rotatably mounted below the mounting frame (101), and the two ends of the tumbling disc (103) are fixedly provided with connecting shafts (1031).

3. A high-speed mulch shredding and burying rake according to claim 2, wherein: One end of the separator screen (201) is rotatably connected to the connecting shaft (1031) via a connecting rod (202), and one end of the connecting rod (202) is fixedly connected to the separator screen (201).

4. A high-speed pulverizing and mixing mulch rake according to claim 1, characterized in that: The side wall of the separator (201) is provided with a plurality of rectangular separator holes (2011). The end of the separator (201) near the tumbling disc (103) is provided with a plurality of matching grooves (2012) that are adapted to the tumbling disc (103). A plurality of combing teeth (2013) are provided between the matching grooves (2012).

5. A high-speed mulch shredding harrow according to claim 1, wherein: The bottom of the separating screen (201) is fixedly provided with symmetrically arranged support columns (203).

6. A high-speed mulch shredding harrow according to claim 2, wherein: One end of the connecting rod (202) is provided with a cavity that is compatible with the connecting shaft (1031). The torsion spring (204) is fixedly installed in the cavity. One end of the torsion spring (204) is fixedly connected to the inner side wall of the cavity of the connecting rod (202), and the other end of the torsion spring (204) is fixedly connected to the connecting shaft (1031).

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