Chinese herbal medicine inter-row weeding mechanism capable of preventing grass winding

Abstract

The utility model relates to a Chinese herbal medicine inter-row weeding mechanism capable of preventing grass twining. The weeding mechanism comprises a weeding assembly and a grass twining preventing assembly. The weeding assembly comprises a supporting frame, a hub motor and a plurality of weeding blades evenly arranged along the periphery of the hub motor. The grass winding prevention assembly comprises two protective covers symmetrically arranged on the left side and the right side of the middle portion of the hub motor. A plurality of grass winding prevention blades are arranged on the outer wall of the protective cover; one end of the protective cover is connected with the side wall of the hub motor, and the other end of the protective cover is provided with a through hole; a plurality of twisting rotary blades are arranged on the periphery of the through hole; and the support frame is provided with a twisting fixed blade corresponding to the twisting rotary blade. According to the utility model, the uniquely designed spindle-shaped protective cover is matched with the cutter structures which are mutually twisted and skillfully arranged, so that the grass winding phenomenon of the weeding mechanism in the operation process can be effectively prevented, and the convenience and high efficiency of the Chinese herbal medicine row-to-row weeding operation are greatly guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of weeding robots, and particularly relates to an inter-row weeding mechanism for Chinese herbal medicines that prevents grass entanglement. Background Art

[0002] In recent years, with the booming development of the Chinese medicine industry, the demand for Chinese herbal medicines has continued to grow, driving the continuous expansion of their planting areas. However, with the expansion of the planting scale, the problem of weed management in Chinese herbal medicine fields has become increasingly prominent, becoming a bottleneck restricting the refined development of the industry.

[0003] Currently, during the planting process of Chinese herbal medicines, manual weeding and some weeding robots are mainly relied on to complete the weeding tasks. Manual weeding, relying on rich labor experience and the meticulous discrimination ability of crops, can accurately remove weeds and avoid damaging Chinese herbal medicine plants, and still dominates in small scattered or high-value rare medicinal material fields. However, this method has low efficiency, with the average daily weeding area per person being only about 0.2 - 0.3 mu, and it has a large labor intensity, high labor costs, and also faces difficulties in hiring workers during the busy farming season. Long-term bending over for work is prone to occupational diseases such as lumbar muscle strain and is not suitable for large-scale planting scenarios. To overcome the limitations of manual weeding, weeding robots have emerged. Relying on the integration of technologies such as sensors, automatic navigation, and mechanical operations, they operate autonomously according to preset paths and operation parameters. In flat and regular large fields, the operation efficiency can be several times that of manual labor, and some advanced models can weed more than 10 mu per day. However, existing weeding robots are difficult to effectively remove long and tough weeds. These weeds are prone to winding around the weeding mechanism, affecting the weeding efficiency. Existing equipment mostly borrows from general agricultural weeding designs and is insufficiently adapted to the special working conditions of Chinese herbal medicine fields. In the face of the complex weed conditions in Chinese herbal medicine fields, especially long and tough weeds such as goosegrass and reed, the weeding mechanism is extremely prone to weed entanglement, resulting in frequent equipment shutdowns, failures, and long cleaning times for the entangled weeds, seriously affecting the normal progress of weeding operations. Moreover, during the weeding process, soil and residues are often carried up, affecting the cleanliness and continuity of the operation.

[0004] Therefore, there is an urgent need to develop a weeding mechanism suitable for inter-row operations of Chinese herbal medicines that can effectively prevent weed entanglement and ensure efficient and clean operations. Summary of the Utility Model

[0005] In order to solve the deficiencies in the prior art, the purpose of the present utility model is to provide an inter-row weeding mechanism for Chinese herbal medicines that prevents grass entanglement. Through unique structural design and ingenious component combination, this weeding mechanism overcomes problems such as grass entanglement and insufficient cleanliness in the operation of existing weeding equipment in Chinese herbal medicine fields, realizes efficient and accurate weeding, and ensures an excellent growth environment for Chinese herbal medicines.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A weeding mechanism for the space between rows of Chinese herbal medicines that prevents grass entanglement. The weeding mechanism includes: a weeding component and a grass entanglement prevention component.

[0008] The weeding component includes a support frame, a hub motor installed on the support frame, and a plurality of weeding blades uniformly arranged along the outer circumference of the hub motor; the hub motor is embedded in the middle position of the support frame, and both ends of the rotating shaft of the hub motor are connected to both ends of the support frame.

[0009] The grass entanglement prevention component includes two protective covers symmetrically arranged on the left and right sides of the middle part of the hub motor; a plurality of grass entanglement prevention blades are arranged on the outer wall of the protective cover; one end of the protective cover is connected to the side wall of the hub motor, and the other end is provided with a circular through hole; a plurality of twisting and rotating blades are arranged on the outer circumference of the through hole; a twisting and fixed blade corresponding to the twisting and rotating blade is arranged on the support frame.

[0010] Further, the support frame is U-shaped and includes a first support part, a second support part and a third support part located on the same side of both ends of the first support part; a fixed frame is arranged on the other side of the first support part.

[0011] Further, a cleaning blade is arranged below the first support part.

[0012] Further, the protective cover is spindle-shaped; the diameter of one end of the protective cover close to the hub motor is larger than the diameter of the end far from the hub motor; a plurality of through holes are opened on the protective cover; the protective cover is fixed to the hub motor by welding.

[0013] Further, the grass entanglement prevention blades are welded on the protective cover, and the grass entanglement prevention blades are obliquely arranged on the surface of the protective cover and have a certain included angle with the central axis of the protective cover.

[0014] Further, a twisting and fixed blade mounting frame is arranged on the support frame; the twisting and fixed blade is fixed to the twisting and fixed blade mounting frame by bolts; the twisting and rotating blade is welded to the end of the protective cover.

[0015] Further, the twisting and fixed blade is installed on the second support part or the third support part through a blade mounting frame.

[0016] Further, the weeding blades are installed on the hub motor through weeding knife holders; the weeding blades are installed on the weeding knife holders by bolts; an annular hoop is sleeved outside the hub motor; a plurality of weeding knife holders are arranged on the outer circumference of the annular hoop, and one weeding blade is installed on each weeding knife holder; the weeding blades are arranged horizontally, and the plane where they are located is parallel to the central axis of the hub motor.

[0017] Furthermore, a hub motor mounting plate is provided on each of the second support portion and the third support portion, and an installation groove is formed on the hub motor mounting plate; both ends of the rotating shaft of the hub motor are respectively installed in the installation grooves on the two hub motor mounting plates; the hub motor is fixed to the hub motor mounting plate by bolts.

[0018] Furthermore, the fixing frame includes an auxiliary wheel fixing frame installed on the first support portion and an adjusting bracket installed on the first support portion; an auxiliary wheel is installed on the auxiliary wheel fixing frame; an angle adjusting tube is provided on the adjusting bracket. The auxiliary wheel fixing frame installs an auxiliary wheel for auxiliary support during movement, and the adjusting bracket is provided with an angle adjusting tube to flexibly adjust the working angle, adapting to different field conditions and the characteristics of Chinese herbal medicine planting rows.

[0019] Compared with the prior art, the advantages of the present utility model are as follows:

[0020] By designing a unique spindle-shaped protective cover and matching it with a knife structure that is intertwined and ingeniously arranged, the present utility model can extremely effectively prevent the phenomenon of grass entanglement during the operation of the weeding mechanism, thereby greatly ensuring the convenience and high efficiency of the weeding operation between Chinese herbal medicine rows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the grass-entanglement prevention weeding mechanism for Chinese herbal medicine rows in the present utility model;

[0022] Figure 2 is a schematic structural diagram of the support frame and the fixing frame in the present utility model;

[0023] Figure 3 is an assembly schematic diagram of the hub motor, the weeding blade, and the weeding knife holder;

[0024] Figure 4 is a schematic structural diagram of the protective cover and the grass-entanglement prevention blade.

[0025] Wherein:

[0026] 1. Angle adjusting tube, 2. Auxiliary wheel, 3. Cleaning blade, 4. Twisted fixed blade, 5. Twisted fixed blade mounting bracket, 6. Twisted rotating blade, 7. Weeding blade, 8. Weeding knife holder, 9. Hub motor, 10. Protective cover, 11. Grass-entanglement prevention blade, 12. Support frame, 13. Fixing frame, 14. Hub motor mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the present utility model with reference to the drawings:

[0028] As Figure 1A kind of inter-row weeding mechanism for Chinese herbal medicines that prevents grass entanglement is shown. The weeding mechanism includes a weeding component and a grass entanglement prevention component.

[0029] As Figure 1 , Figure 2 and Figure 3 As shown, the weeding component includes a support frame 12, a hub motor 9 installed on the support frame 12, and a plurality of weeding blades 7 uniformly arranged along the outer circumference of the hub motor 9. The hub motor 9 is embedded in the middle position of the support frame 12, and both ends of the rotating shaft of the hub motor 9 are connected to both ends of the support frame 12. The hub motor 9 is fixed to the hub motor mounting plate 14 by bolts, and the weeding blades 7 are installed on the weeding knife rest 8 by bolts. When the hub motor 9 rotates, it drives each weeding blade 7 on the weeding knife rest 8 to rotate, and the weeding blades 7 perform weeding.

[0030] The hub motor 9 is precisely embedded in the middle of the support frame 12. Both ends of its rotating shaft are installed in the mounting grooves of the hub motor mounting plates on the second support part and the third support part of the support frame 12 and are fastened by bolts to ensure the stable operation of the motor and reliable power transmission. Along the outer circumference of the hub motor 9, a plurality of weeding knife rests 8 are fixed by means of a circular clamp. A weeding blade 7 parallel to the central axis of the hub motor is arranged on each weeding knife rest 8. When the hub motor 9 rotates, it drives the weeding blades 7 to rotate at high speed, and relies on the cutting force of the sharp blades to crush small weeds and cut off the stems of large weeds, clearing the obstacles in the rows.

[0031] As Figure 2 shown, the support frame 12 is U-shaped, including a first support part and a second support part and a third support part on the same side at both ends of the first support part; a fixed frame 13 is arranged on the other side of the first support part; a hub motor mounting plate 14 is arranged on both the second support part and the third support part, and an installation groove is opened on the hub motor mounting plate 14; both ends of the rotating shaft of the hub motor 9 are respectively installed in the installation grooves on the two hub motor mounting plates 14.

[0032] As Figure 2 shown, a cleaning blade 3 is arranged below the first support part. When the hub motor 9 rotates rapidly, it will lift some soil or weed residues. At this time, the cleaning blade 3 intersects with the rotating weeding blade 7 to remove this part of the debris and prevent the mechanism from being blocked by these debris.

[0033] As Figure 1 and Figure 2As shown, the fixing bracket 13 includes an auxiliary wheel fixing bracket installed on the first support portion and an adjustment bracket installed on the first support portion. An auxiliary wheel 2 is installed on the auxiliary wheel fixing bracket. The auxiliary wheel and the weeding wheel are kept in the same straight line to maintain the balance of the mechanism. An angle adjustment tube 1 is provided on the adjustment bracket. The angle adjustment tube can make the mechanism have different inclination angles to adapt to different working environments.

[0034] As Figure 3 shown, the weeding blade 7 is installed on the hub motor 9 through a weeding knife holder 8. An annular clamp is sleeved outside the hub motor 9. A plurality of weeding knife holders 8 are provided on the outer periphery of the annular clamp. A weeding blade 7 is installed on each weeding knife holder 8. The weeding blade is arranged horizontally, and the plane where it is located is parallel to the central axis of the hub motor 9. The knife holder and the weeding blade are fixed by means of a clamp. This design is to adapt to different row widths and soil qualities, and different lengths, widths, and shapes of blades can be quickly replaced to achieve the best weeding effect.

[0035] As Figure 1 shown, the anti-entangling grass component includes two protective covers 10 symmetrically arranged on the left and right sides of the middle part of the hub motor. Figure 1 It can be seen from the figure that the protective cover 10 is located between the second support portion and the third support portion. A plurality of anti-entangling grass blades 11 are provided on the outer wall of the protective cover 10; one end of the protective cover 10 is connected to the side wall of the hub motor 9, and the other end is provided with a circular through hole; a plurality of twisted rotating blades 6 are provided on the outer periphery of the through hole; a twisted fixed blade 4 is respectively provided above the same end of the second support portion and the third support portion; the twisted fixed blade 4 is installed on the second support portion or the third support portion through a blade mounting bracket 5. The diameter of one end of the protective cover 10 close to the hub motor 9 is greater than the diameter of the end of the protective cover 10 far from the hub motor 9, that is, one end of the protective cover is large and the other end is small, and the two ends are connected by an arc surface. The protective cover 10 covers the outside of the middle part of the hub motor 9, playing a protective role for the hub motor 9, and can prevent weeds from winding around the hub motor 9 and avoid damage to the hub motor 9 due to weed entanglement.

[0036] As Figure 4As shown, the protective cover 10 is spindle-shaped. The diameter of the spindle-shaped protective cover 10 at the end closer to the in-wheel motor is larger than that at the end farther from the in-wheel motor. A plurality of through holes are formed in the protective cover 10, and the plurality of through holes make the protective cover 10 have a hollow design. The hollow protective cover 10 allows the soil brought into the interior of the protective cover 10 by the rotation of the in-wheel motor 9 to leak out. The protective cover is spindle-shaped, and this design enables some weeds to be sent to the stranding cutter (the stranding cutter includes a stranding fixed blade 4 and a stranding rotating blade 6) as expected, and the stranding cutter is used to cut off the weeds, ensuring the smooth progress of the weeding process. The spindle-shaped design of the protective cover can also increase the strength of the protective cover, contribute to stress dispersion, and extend the service life.

[0037] The described protective cover 10 is fixed on the in-wheel motor 9 by welding, and the in-wheel motor 9 rotates to drive the protective cover 10 to rotate. During the rotation of the protective cover 10, the spindle-shaped design of the protective cover 10 drives the weeds wound around the protective cover 10 to move towards the narrow end of the protective cover 10. During the movement, the anti-winding blades 11 on the protective cover 10 will cut off most of the weeds wound around the protective cover 10. The remaining small part of the weeds will be brought to the end of the protective cover 10, and the stranding fixed blade 4 and the stranding rotating blade 6 cooperate with each other, and these weeds are removed by their mutual stranding, so as to achieve the purpose of preventing weed entanglement.

[0038] The described anti-winding blades 11 are fixed on the protective cover 10 by welding, and the anti-winding blades 11 are inclined on the surface of the protective cover 10 and have a certain angle with the central axis of the protective cover 10. By obliquely placing the anti-winding blades 11 on the outer surface of the protective cover 10, the stability of the weed cutting process is improved, ensuring that most of the weeds are smoothly cut off at this stage. In addition, the oblique placement of the anti-winding blades 11 can also reduce the lateral pressure, decompose the tangential force of the blade into horizontal and vertical forces, which is beneficial to reducing the wear of the blade.

[0039] As Figure 2 shown, the stranding fixed blade 4 is fixed on the stranding fixed blade mounting bracket 5 by bolts, and the stranding fixed blade mounting bracket 5 is fixed on the support frame 12. As Figure 4 shown, the stranding rotating blades 6 are evenly welded to the end of the protective cover 10 by welding. During the rotation of the in-wheel motor 9, the stranding rotating blades 6 cooperate with the stranding fixed blade 4 to achieve stranding and cut off the weeds, so as to achieve the purpose of preventing weed entanglement.

[0040] The utility model arranges two spindle-shaped (with a larger diameter at the motor end and a smaller diameter at the far end) protective covers 10 on both sides of the in-wheel motor 9. Designed according to the law of weed entanglement and movement, the centrifugal force is used to guide the weeds wound on the protective cover 10 to move towards the end of the protective cover 10. The protective cover is provided with a plurality of through holes for weight reduction and to prevent soil accumulation. By arranging a plurality of inclined anti-entangling grass blades on the outer wall of the protective cover, as the protective cover 10 rotates, the cutting edges of the anti-entangling grass blades 11 are like flying knives to cut the entangled weeds, solving most of the weed entanglement problems. By welding a twisted rotating blade 6 on the outer circumference of the circular through hole at the end of the protective cover 10, and arranging a twisted fixed blade 4 at the corresponding position on the support frame 12, the cutting edges of the twisted fixed blade 4 and the twisted rotating blade 6 are precisely matched (with a gap of 1-2 mm). When the remaining weeds reach here, they are cut off at the roots through the twisting action, completely eliminating the hidden danger of secondary weed entanglement. In addition, a cleaning blade 13 is arranged below the first support part. When the mechanism operates and brings up soil and sundries, it cooperates with the weeding blade to change the trajectory of the sundries, remove the sundries, maintain the cleanliness of the operation surface, and protect the internal structure of the equipment.

[0041] The working principle of the utility model is as follows:

[0042] When the weeding mechanism described in the utility model operates, it relies on the in-wheel motor to drive the weeding blade 7 to rotate between the Chinese herbal medicines to achieve weed removal. When encountering small weeds, the blade will directly crush them. However, when facing longer and more resilient weeds such as goosegrass, the weeds may wind around the spindle-shaped hollow protective cover 10 along with the rotating weeding blade 7. At this time, the anti-entangling grass blades equipped on the protective cover will play a role and cut off most of the weeds. The remaining small part of the weeds will be sent to the end of the protective cover as the protective cover continues to rotate. At this position, the twisted rotating blade 6 and the twisted fixed blade 4 will cooperate with each other, and the remaining weeds will be completely cut off through the twisting action. In addition, when the mechanism quickly removes weeds, it may bring up some soil or residues. At this time, the cleaning blade 3 on the fixed frame will play a role in removing these sundries to ensure the high efficiency and cleanliness of the weeding operation.

[0043] The above-described embodiments are only used to describe the preferred embodiments of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. An inter-row weeding mechanism for Chinese herbal medicines that prevents grass entanglement, characterized in that The weeding mechanism includes: a weeding component and an anti - entanglement component; The weeding component includes a support frame (12), a hub motor (9) installed on the support frame (12), and a plurality of weeding blades (7) uniformly arranged along the outer circumference of the hub motor (9); the hub motor (9) is embedded in the middle position of the support frame (12), and both ends of the rotating shaft of the hub motor (9) are connected to both ends of the support frame (12); The anti - entanglement component includes two protective covers (10) symmetrically arranged on the left and right sides of the middle part of the hub motor (9); a plurality of anti - entanglement blades (11) are arranged on the outer wall of the protective cover (10); one end of the protective cover (10) is connected to the side wall of the hub motor (9), and the other end is provided with a circular through - hole; a plurality of twisted rotating blades (6) are arranged on the outer circumference of the through - hole; a twisted fixed blade (4) corresponding to the twisted rotating blade (6) is arranged on the support frame (12).

2. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 1, wherein, The support frame (12) is U - shaped, including a first support part and a second support part and a third support part on the same side of both ends of the first support part; a fixed frame (13) is arranged on the other side of the first support part.

3. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 2, wherein, A cleaning blade (3) is arranged below the first support part.

4. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 1, wherein, The protective cover (10) is spindle - shaped; the diameter of one end of the protective cover (10) close to the hub motor (9) is larger than the diameter of the end far from the hub motor (9); a plurality of through - holes are formed in the protective cover (10); the protective cover (10) is fixed to the hub motor (9) by welding.

5. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 1, wherein, The anti - entanglement blades (11) are welded to the protective cover (10), and the anti - entanglement blades (11) are inclined on the surface of the protective cover (10) and have a certain included angle with the central axis of the protective cover (10).

6. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 1, wherein, A twisted fixed blade mounting frame (5) is arranged on the support frame (12); the twisted fixed blade (4) is fixed to the twisted fixed blade mounting frame (5) by bolts; the twisted rotating blade (6) is welded to the end of the protective cover (10).

7. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 2, wherein, The twisted fixed blade (4) is installed on the second support part or the third support part through a blade mounting frame (5).

8. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 1, wherein, The weeding blade (7) is installed on the hub motor (9) through a weeding tool holder (8); the weeding blade (7) is installed on the weeding tool holder (8) by bolts; an annular hoop is sleeved outside the hub motor (9); a plurality of weeding tool holders (8) are arranged on the outer periphery of the annular hoop, and one weeding blade (7) is installed on each weeding tool holder (8); the weeding blade (7) is arranged horizontally, and the plane where it is located is parallel to the central axis of the hub motor (9).

9. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 2, wherein, A hub motor mounting plate (14) is provided on both the second support part and the third support part, and an installation groove is formed in the hub motor mounting plate (14); both ends of the rotating shaft of the hub motor (9) are respectively installed in the installation grooves on the two hub motor mounting plates (14); the hub motor (9) is fixed to the hub motor mounting plate (14) by bolts.

10. The anti - entanglement Chinese herbal medicine inter - row weeding mechanism according to claim 2, wherein, The fixing frame (13) includes an auxiliary wheel fixing frame installed on the first support part and an adjusting bracket installed on the first support part; an auxiliary wheel (2) is installed on the auxiliary wheel fixing frame; an angle adjusting tube (1) is provided on the adjusting bracket.

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