A rotary cultivator with a blade shaft anti-winding device

Abstract

The utility model discloses a kind of knife shaft anti-winding devices for rotary cultivator, it is related to rotary cultivator technical field, to solve the technical problem that different types and quantity of winding are difficult to deal with in complex field environment by front cleaning device, and blade wear is prone to appear too fast, cleaning is not complete in cleaning process, including the cutting assembly of several installations in the outer wall of the knife shaft of rotary cultivator main body, and the cutting assembly is fixedly connected with the flange plate on the knife shaft stem wall, each cutting assembly includes two groups of fixed ring by two half rings connection, the outer wall of the fixed ring is arrayed with several cutting pieces, each cutting piece includes tool holder, the utility model is by device by cutting piece arrayed on the outer wall of fixed ring, utilize cutting knife to actively cut the weeds, vines and other sundries wound on the knife shaft, reduce the accumulation of winding from source, with the advantage that the thoroughness of cutting is improved, the protectivity of cutting knife is strengthened, the effect of improving structure durability is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, and more specifically, to an anti-winding device for the blade shaft of a rotary tiller. Background Technology

[0002] In agricultural production, rotary tillers, as important tillage machinery, often face serious entanglement problems with their cutter shafts during operation. Currently, when rotary tillers are in operation, weeds, vines, straw, and other debris in the field easily become entangled on the cutter shaft and flange, and the entanglement accumulates more and more as the operating time increases.

[0003] Existing anti-winding devices for rotary tillers are mostly simple in structure and have limited anti-winding effect. Some devices rely solely on simple scrapers or fixed blades for cleaning, which is insufficient to handle different types and quantities of entangled materials in complex field environments. Furthermore, the blades are prone to wear out too quickly and incomplete cleaning during the cleaning process. In view of this, we propose an anti-winding device for the blade shaft of a rotary tiller. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide an anti-winding device for the blade shaft of a rotary tiller. This solves the technical problems that current cleaning devices are unable to cope with different types and quantities of entangled objects in complex field environments, and that the blades wear out too quickly and the cleaning is not thorough during the cleaning process.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a rotary tiller cutter shaft anti-winding device, comprising a plurality of cutting components installed on the outer wall of the cutter shaft of the rotary tiller body, and the cutting components being fixedly connected to the flange on the cutter shaft rod wall;

[0006] Each of the cutting components includes two sets of fixed rings consisting of two semi-rings connected together. Several cutting elements are arranged in an array on the outer wall of the fixed rings. Each cutting element includes a blade holder. A cutting blade is fixedly connected between the two blade holders. A protective strip that fits against the two sides of the cutting blade is also slidably installed between the two blade holders. Several mounting grooves are opened on the side wall of the cutting blade. A retractable elastic element is fixedly installed inside the mounting groove. The end of the elastic element is fixedly connected to the side of the protective strip.

[0007] This invention utilizes a device that arrays cutting elements on the outer wall of a fixed ring to actively cut weeds, vines, and other debris entangled on the blade shaft, reducing the accumulation of entangled material at its source. The protective strip, designed to fit snugly against both sides of the cutting blade, not only protects the blade from excessive soil and other impurities that could affect cutting efficiency when not cutting, but also adjusts its position during cutting by extending and retracting the elastic element, guiding the entangled material towards the cutting area and improving the thoroughness of the cut. This effectively solves the problems of decreased operating efficiency and increased equipment load caused by blade shaft entanglement in traditional rotary tillers.

[0008] Preferably, a groove is formed between the two protective strips, and a slider is fixedly provided on the side of the groove that fits with the tool holder. A sliding groove is provided on the side of the tool holder that is slidably connected to the slider.

[0009] Preferably, the elastic element includes a spring, with support blocks fixedly provided at both ends of the spring. One side of the support block is fixedly connected to the side of the mounting groove, and the other side of the support block is fixedly connected to the side of the protective strip. An elastic tube is fixedly connected between the two support blocks.

[0010] Preferably, threaded holes are provided at the center of the plate wall of the protective strips on both sides, and a positioning hole is provided at the center of the plate wall of the cutting blade, which is flush with the threaded holes, and the threaded holes and the positioning holes can be connected by screws.

[0011] Preferably, the opposite sides of the protective strips on both sides are integrally formed with extension strips, and the sides of the extension strips are arc surfaces.

[0012] Preferably, the ends of the blade holders are each provided with a guide surface that is inclined toward the end of the cutting blade, and the end of the protective strip is higher than the end of the cutting blade.

[0013] Preferably, a plurality of connecting blocks that fit against the side of the flange are also fixedly provided on the outer wall of the fixing ring, and each connecting block has a connecting bolt threadedly connected to the side wall of the flange.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model utilizes a device that arrays cutting components on the outer wall of a fixed ring. The cutting blades actively cut weeds, vines, and other debris entangled on the blade shaft, reducing the accumulation of entangled material at its source. The protective strips, designed to fit snugly against both sides of the cutting blades, not only protect the blades from excessive soil and other impurities that could affect cutting efficiency when not cutting, but also adjust their position during cutting by extending and retracting the elastic components. This guides the entangled material towards the cutting area, improving the thoroughness of the cut and effectively solving the problems of decreased operating efficiency and increased equipment load caused by blade shaft entanglement in traditional rotary tillers.

[0016] 2. This utility model also features a protective strip that is slidably connected to the cutter holder and extends and retracts through an elastic element, allowing for adaptive adjustment of the position according to the condition of the wrapped material. The end of the protective strip is higher than the end of the cutting blade, enhancing protection without affecting cutting. Furthermore, the fit between the threaded hole and the positioning hole can fix the position of the protective strip as needed, meeting the requirements of different operating scenarios and further improving the flexibility of the structural fit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structural assembly of the cutting component in this utility model;

[0019] Figure 3 This is a schematic diagram of the cutting component in this utility model;

[0020] Figure 4 for Figure 3 A partial cross-sectional view of the structure;

[0021] Figure 5 for Figure 4 Enlarged structural diagram of part A.

[0022] The following are the labeling instructions in the diagram: 1. Cutting assembly; 2. Rotary tiller body; 201. Cutter shaft; 202. Flange; 3. Retaining ring; 4. Cutting component; 401. Cutter holder; 402. Cutting blade; 403. Slide groove; 404. Guide surface; 405. Mounting groove; 406. Positioning hole; 5. Protective strip; 501. Cutter groove; 502. Slider; 503. Extension strip; 504. Threaded hole; 6. Elastic component; 601. Spring; 602. Support block; 603. Elastic tube; 7. Connecting block; 701. Connecting bolt. Detailed Implementation

[0023] like Figures 1 to 5As shown, the present invention relates to an anti-winding device for a rotary tiller cutter shaft, comprising several cutting components 1 installed on the outer wall of the cutter shaft 201 of the rotary tiller body 2, and the cutting components 1 being fixedly connected to the flange 202 on the shaft wall of the cutter shaft 201; the connection between the cutting components 1 and the flange 202 allows them to be fixed to the outer wall of the cutter shaft 201, thereby cutting easily entangled materials such as weeds and vines during rotation.

[0024] Each cutting component 1 includes two sets of fixed rings 3, each consisting of two semi-rings connected together. Several cutting elements 4 are arrayed on the outer wall of the fixed rings 3. Each cutting element 4 includes a blade holder 401, with a cutting blade 402 fixedly connected between the two blade holders 401. Protective strips 5, which slidably fit against the sides of the cutting blade 402, are also slidably installed between the two blade holders 401. Several mounting grooves 405 are formed on the side wall of the cutting blade 402. Retractable elastic elements 6 are fixedly installed inside the mounting grooves 405, and the ends of the elastic elements 6 are fixedly connected to the sides of the protective strips 5. The cutting blade 402 automatically cuts through weeds, vines, and other easily entangled objects under the compressive force of the cutting. The protective strips 5 provide initial blocking and guiding, reducing the probability of debris directly entangled on the cutting blade 402 or the blade shaft 201. Combined with the support of the elastic elements 6, it can automatically shift under certain pressure. The cutting edge of the cutting blade 402 is serrated, which achieves better cutting results and increases cutting strength when weeds, vines, and other foreign objects are entangled and shifted.

[0025] In an embodiment of this utility model, a knife groove 501 is formed between the two protective strips 5. A slider 502 is fixedly provided on the side of the knife groove 501 that is in contact with the knife holder 401. A sliding groove 403 that is slidably connected to the slider 502 is provided on the side of the knife holder 401.

[0026] In an embodiment of this utility model, the elastic element 6 includes a spring 601, with support blocks 602 fixedly disposed at both ends of the spring 601. One support block 602 is fixedly connected to the side of the mounting groove 405, and the other support block 602 is fixedly connected to the side of the protective strip 5. An elastic tube 603 is fixedly connected between the two support blocks 602. The design of the spring 601 can achieve a stable extension and contraction effect, the design of the support block 602 can facilitate the fixed installation position, and the design of the elastic tube 603 can block weeds and vines from passing through, thus providing a good protective effect.

[0027] In this embodiment of the utility model, threaded holes 504 are provided at the center of the plate wall of both protective strips 5, and positioning holes 406 are provided at the center of the plate wall of the cutting blade 402, which are flush with the threaded holes 504. The threaded holes 504 and positioning holes 406 can be connected by screws. In special circumstances, the protective strips 5 can be manually moved to align the threaded holes 504 and positioning holes 406. By connecting them with screws, the position of the protective strips 5 can be fixed, so that the blade of the cutting blade 402 is always exposed, which meets the needs of different sites.

[0028] In the embodiments of this utility model, the opposite sides of the protective strips 5 on both sides are integrally formed with extension strips 503, and the sides of the extension strips 503 are arc surfaces; the design of the extension strips 503 can expand the compression surface of the weed vines, so that the weed vines can better compress the displacement of the protective strips 5 during the rolling process, so that the end of the cutting blade 402 can be stably exposed for cutting.

[0029] In the embodiments of this utility model, the ends of the blade holder 401 are all constructed with guide surfaces 404 that are inclined toward the ends of the cutting blade 402, and the ends of the protective strips 5 are higher than the ends of the cutting blades 402; the protective strips 5 can contact the debris before the cutting blades 402, playing a preliminary blocking and guiding role, reducing the probability that the debris will directly wrap around the cutting blades 402 or the blade shaft 201.

[0030] In an embodiment of this utility model, a number of connecting blocks 7 that fit against the side of the flange 202 are also fixedly provided on the outer wall of the fixing ring 3. Each connecting block 7 has a connecting bolt 701 threadedly connected to the side wall of the flange 202. This structural design makes it easy to disassemble and assemble the cutting component 1.

[0031] Working Principle: This embodiment provides an anti-winding device for the cutter shaft of a rotary tiller. The entire device is installed on the outer wall of the cutter shaft 201 of the rotary tiller body 2 via several cutting components 1, and is fixed to the flange 202 on the cutter shaft 201 to ensure synchronous operation when the cutter shaft 201 rotates. The fixing ring 3 of each cutting component 1 is composed of two half-rings connected together, which facilitates installation and maintenance. The cutting elements 4 arrayed on its outer wall are the core execution components for anti-winding. In the cutting elements 4, the cutting blade 402 supported by the cutter holder 401 rotates at high speed under the drive of the cutter shaft 201, directly cutting weeds, vines and other easily entangled objects in the soil. The protective strip 5 slidably installed between the two cutter holders 401 has its end higher than the end of the cutting blade 402, and can contact the debris before the cutting blade 402, playing a preliminary blocking and guiding role, reducing the probability of debris directly winding onto the cutting blade 402 or the cutter shaft 201. The protective strip 5 and the blade holder 401 are slidably connected via a slider 502 and a groove 403, forming an elastic buffer structure in conjunction with the elastic element 6 between the blade shaft 201 and the protective strip 5. When the protective strip 5 encounters hard debris or is subjected to a large impact, it compresses the elastic element 6 and slides along the groove 403 toward the blade shaft 201. At this time, the cutting blade 402 is exposed in the blade groove 501, allowing for more effective cutting of debris. After the impact disappears, the elastic force of the elastic element 6 causes the protective strip 5 to return to its original position, re-protecting the cutting blade 402 and preventing debris from adhering after cutting. The spring 601 of the elastic element 6 provides a stable extension and contraction effect, the support block 602 fixes the connection position, and the design of the elastic tube 603 provides an anti-entanglement effect, preventing weeds, vines, etc., from passing through the spring 601 and affecting its extension and contraction elasticity, thus improving the structural durability. Furthermore, the retaining ring 3 is tightly connected to the flange 202 via the connecting block 7 and connecting bolt 701, ensuring the stability of the cutting assembly 1 during high-speed rotation. This allows the entire anti-winding device to continuously and efficiently cooperate with the rotary tiller, significantly reducing the occurrence of winding failures on the cutter shaft 201. Through the coordinated operation of the above-mentioned components, this anti-winding device for the rotary tiller's cutter shaft effectively reduces the entanglement of weeds and other debris on the cutter shaft 201, ensuring the normal operation of the rotary tiller, improving work efficiency, and extending the equipment's service life.

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A rotary tiller blade shaft anti-winding device, characterized in that, It includes several cutting components (1) installed on the outer wall of the cutter shaft (201) of the rotary tiller body (2), and the cutting components (1) are fixedly connected to the flange (202) on the rod wall of the cutter shaft (201); Each of the cutting components (1) includes two sets of fixed rings (3) connected by two semi-rings. Several cutting parts (4) are arranged in an array on the outer wall of the fixed rings (3). Each cutting part (4) includes a blade holder (401). A cutting blade (402) is fixedly connected between the two blade holders (401). A protective strip (5) that fits against the two sides of the cutting blade (402) is also slidably installed between the two blade holders (401). Several mounting grooves (405) are opened on the side wall of the cutting blade (402). A retractable elastic element (6) is fixedly installed inside the mounting groove (405). The end of the elastic element (6) is fixedly connected to the side of the protective strip (5).

2. The anti-winding device for rotary tiller blade shafts according to claim 1, characterized in that, A knife groove (501) is formed between the two protective strips (5). A slider (502) is fixedly provided on the side of the knife groove (501) that is in contact with the knife holder (401). A sliding groove (403) is provided on the side of the knife holder (401) that is slidably connected to the slider (502).

3. The anti-winding device for rotary tiller blade shafts according to claim 1, characterized in that, The elastic element (6) includes a spring (601), and support blocks (602) are fixedly provided at both ends of the spring (601). One side of the support block (602) is fixedly connected to the side of the mounting groove (405), and the other side of the support block (602) is fixedly connected to the side of the protective strip (5). An elastic tube (603) is fixedly connected between the two support blocks (602).

4. The anti-winding device for rotary tiller blade shafts according to claim 3, characterized in that, The protective strips (5) on both sides have threaded holes (504) at their center. The cutting blade (402) has a positioning hole (406) at its center that is flush with the threaded hole (504). The threaded hole (504) and the positioning hole (406) can be connected by screws.

5. The anti-winding device for the blade shaft of a rotary tiller according to claim 1, characterized in that, Both sides of the protective strip (5) have an extension strip (503) integrally formed on opposite sides, and the side of the extension strip (503) is an arc surface.

6. The anti-winding device for the blade shaft of a rotary tiller according to claim 1, characterized in that, The ends of the blade holder (401) are each constructed with a guide surface (404) that is inclined toward the end of the cutting blade (402), and the end of the protective strip (5) is higher than the end of the cutting blade (402).

7. The anti-winding device for the blade shaft of a rotary tiller according to claim 1, characterized in that, Several connecting blocks (7) that fit against the side of the flange (202) are also fixedly installed on the outer wall of the fixing ring (3). Each connecting block (7) has a connecting bolt (701) threadedly connected to the side wall of the flange (202).

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