A rotating blade disc-type narrow-width tea garden weeding machine

Abstract

This utility model relates to a narrow-width, wide-section tea garden weeder with a rotating blade disc that mimics the contours of the terrain. The machine uses a hydraulic push rod to adjust the initial height difference between the blade disc and the ground. The designed contouring mechanism ensures that the height of the weeding components automatically adjusts according to the terrain's undulations during operation, guaranteeing consistent cutting height regardless of terrain. A four-bar linkage with a multi-stage belt drive ensures that the belt remains taut as the outer shell moves up and down with the L-shaped bar, and the shell's tilt angle relative to the ground remains constant, keeping the blade disc level and ensuring effective weeding. Furthermore, the blade disc design can be switched according to the working environment, allowing it to be used for various tasks such as lawn mowing and moss removal from concrete surfaces. This utility model not only improves the mechanization of weeding in tea gardens but also reduces labor intensity and increases work efficiency, making it worthy of widespread application.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment, specifically a narrow-width tea garden weeding machine with a rotating cutter head. Background Technology

[0002] Tea is an important economic and beverage crop in my country. In 2024, my country's tea planting area reached 3,500,000 hectares, accounting for 65.8% of the global tea plantation area, and its output reached 3.74 million tons, accounting for 37.4% of the global total tea production. Tea ridges are narrow and winding, and the planting areas have steep slopes, making mechanized field operations difficult and resulting in low mechanization levels in tea gardens, especially in weeding. Currently, there are two types of weeding machines used in tea gardens: hand-held weeders and backpack weeders, but both require manual assistance, which is labor-intensive and inefficient. Small weeders on the market typically have a width of 800mm-1200mm, mostly used in orchards and land reclamation, while tea ridges are generally ≤650mm wide, lack contour-following mechanisms, and leave tall weed stubble, making them unsuitable for tea gardens. Therefore, a narrow-width tea garden weeder with a rotating cutter head and contour-following design was designed. The width is ≤600mm, which is suitable for the width of tea ridges, making it convenient for inter-ridge operations and turning around in the field. The addition of a contour-following mechanism makes it well adaptable to undulating terrain, reducing labor intensity and operating costs, and solving the problem of labor shortage. At the same time, the cutter head type can be switched according to the working environment, and it can also be used for various operations such as lawn mowing and moss removal on cement roads. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a narrow-width tea garden weeding machine with a rotating cutter head, which addresses the above-mentioned shortcomings.

[0004] To solve the above technical problems, the present invention adopts the following technical solution:

[0005] A rotary cutterhead-based narrow-width tea garden weeder includes a weeding component lifting and contouring system, a tracked universal chassis, and a weeding working component. Both the weeding component lifting and contouring system and the power supply system are mounted on the tracked universal chassis. The weeding working component uses a weeding disc for weeding. The weeding component lifting and contouring system includes a four-bar linkage mechanism, a multi-stage belt drive mechanism, a safety rope mechanism, and a housing. The multi-stage belt drive mechanism is hinged to the four-bar linkage mechanism. The housing is fitted over the four-bar linkage mechanism and the multi-stage belt drive mechanism. The output end of the multi-stage belt drive mechanism is connected to a drive motor, and the output end is connected to the weeding working component. The drive motor drives the weeding working component to rotate for weeding via the multi-stage belt drive mechanism. The safety rope mechanism is mounted on the tracked universal chassis, and the movable end of the safety rope is connected to the housing. The safety rope mechanism is used to adjust and limit the lowest downward position of the housing.

[0006] Furthermore, an L-shaped rod is provided on the front of the outer casing, and a rolling wheel is provided at the lower end of the L-shaped rod. When the rolling wheel rolls on the ground, it can drive the outer casing to move up and down with the ground, thereby driving the weeding disc to move up and down to achieve contouring.

[0007] Furthermore, the weeding disc includes multiple steel wire weeding rods arranged along the central axis.

[0008] Furthermore, the safety rope mechanism includes a steel wire rope, a fixed pulley support frame, and a hydraulic push rod. The hydraulic push rod is vertically mounted on the base plate of the working component. One end of the steel wire rope is fixed to the upper movable end of the hydraulic push rod, and the other end passes through the fixed pulley support frame and is connected to the outer shell. The hydraulic push rod is used to drive the steel wire rope to move up and down by moving up and down, thereby driving the outer shell to move up and down and adjusting the height of the weeding disc.

[0009] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0010] The advantages of this invention are that the machine's overall width is ≤600mm, allowing it to move freely between tea garden rows. Simultaneously, during weeding, the engine drives a generator to charge the battery of the walking system in real time, extending its range. Secondly, the initial height difference between the weeding blade and the ground can be adjusted via a hydraulic push rod. The designed contour-following mechanism ensures that the machine automatically adjusts the height of the weeding components according to terrain undulations during operation, guaranteeing consistent cutting height and freedom from terrain limitations. Furthermore, the four-bar linkage with a multi-stage belt drive mechanism ensures that the belt remains taut as the outer shell moves up and down with the L-shaped bar, and the tilt angle of the shell relative to the ground remains constant, keeping the weeding blade horizontal and guaranteeing effective weeding.

[0011] Furthermore, the blade design can be switched according to the working environment, and it can also be used for various tasks such as lawn mowing and moss removal from cement roads. This utility model not only improves the level of mechanized weeding in tea gardens, but also reduces labor intensity and increases work efficiency, thus possessing considerable promotional value.

[0012] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the composition structure of a rotating blade narrow-width tea garden weeding machine in the form of a new utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the tracked chassis with the left track removed;

[0015] Figure 3 This is a schematic diagram of the tracked walking system.

[0016] Figure 4 This is a schematic diagram of the working top cover;

[0017] Figure 5 This is a structural diagram of the working shaft and its connected working components;

[0018] Figure 6 This is a structural diagram with the working top cover removed.

[0019] Figure 7 This is a schematic diagram of the control scheme;

[0020] Figure 8 A comparison diagram of the device in the raised and lowered states of the wire rope.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Track; 2. Motor; 3. Left drive wheel; 4. Left track side plate; 5. Right drive wheel; 6. Right track side plate; 7. Right driven wheel; 8. Left driven wheel; 9. Generator support frame; 10. Generator; 11. Weeder rear cover; 12. Battery; 13. Crossbeam square steel; 14. Walking system; 15. Weeder base plate; 16. Diesel engine starting battery; 17. Starting battery bracket; 18. Working component support plate; 19. Working component top cover; 20. Universal wheel support plate; 21. Universal wheel height adjustment plate; 22. Universal wheel; 23. Right wire weeding disc; 24. Right weeding working head; 25. Working shaft; 26. Bearing seat one; 27. Left weeding working head; 28. Left wire weeding disc; 29. ​​Working shaft sleeve; 30. Double groove A-type V-belt pulley II; 31. Fixed pulley support frame; 32. Fixed pulley; 33. Safety rope; 34. Type A V-belt I; 35. Connecting plate; 36. Type A V-belt pulley with bearing and four grooves; 37. Shaft II; 38. Push rod head; 39. Hydraulic push rod; 40. Type A V-belt pulley I with double grooves; 41. Type B V-belt pulley with double grooves on the outer diameter; 42. Hydraulic push rod positioning sleeve; 43. Working part base plate; 44. Type A V-belt II; 45. Connecting vertical rod; 46. Flange; 47. Shaft I; 48. Bearing seat II; 49. Bearing seat support plate; 50. Parallel four-bar side rod; 51. Working shaft and its connected working parts; 52. Diesel engine; 53. Weeding part lifting and contouring system; 54. Track walking system; 55. Weeding working parts; 56. Power supply system; 57. Type B V-belt I; 58. Type B V-belt II. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figure 1-8 As shown, the weeding component lifting and contouring system 53 includes a working component support plate 18, a working component top cover 19, a universal wheel support plate 20, a universal wheel height adjustment plate 21, universal wheels 22, a fixed pulley support frame 31, a fixed pulley 32, a safety rope 33, a connecting plate 35, a shaft 37 on the top cover, a push rod head 38, a hydraulic push rod 39, a hydraulic push rod positioning sleeve 42, a working component base plate 43, and parallel four-bar side rods 50. The working component base plate 43 is connected to the working component support plate 18 by eight screws. The fixed pulley support frame 31 and the hydraulic push rod positioning sleeve 42 are welded to the working component base plate 43, and the hydraulic push rod 39 is fixed to the hydraulic push rod positioning sleeve 42 by a positioning pin. The holes of the push rod head 38 and the connecting plate 35 are respectively fixed to both ends of the safety rope 33. When the extension of the hydraulic push rod 39 is adjusted, the contact position between the safety rope 33 and the connecting plate 35 can be changed, thereby changing the ground clearance of the top cover 19 of the working part. The fixed pulley 32 is connected to the fixed pulley support frame 31 by bolts. The connecting plate 35 is fixed to the top cover 19 of the working part by four screws. The universal wheel support plate 20 is fixed to the top cover 19 of the working part by welding. The universal wheel height adjustment plate 21 is fixed to the universal wheel 22 by four bolts. The universal wheel support plate 20 is fixed to the universal wheel height adjustment plate 21 by two bolts. The ground clearance of the universal wheel is controlled by changing the fixing hole position of the height adjustment plate. The universal wheel support plate 20, universal wheel height adjustment plate 21, and universal wheel 22 at the front of the weeding machine operate when the weeding blade is about to touch the ground on rough roads. They can support the top cover 19 of the working part to keep the weeding blade at a certain distance from the ground. When the universal wheel 22 is working, the safety rope 33 is loosened. The flexible connection prevents the whole machine from being lifted up when the universal wheel is working. The universal wheel 22 can keep the height of the weeding blade above the ground to a certain extent on uneven fields and prevent the weeding blade from getting stuck in the soil. The parallel four-bar side rod 50 is fixed to the top cover 19 of the working part through the shaft 37 and pin on the top cover. The parallel four-bar side rod 50 is fixed to the bottom plate 43 of the working part through the pin.

[0026] The tracked universal chassis 54 includes a track 1, a motor 2, a left drive wheel 3, a left track side plate 4, a right drive wheel 5, a right track side plate 6, a right driven wheel 7, a left driven wheel 8, a crossbeam square steel 13, and a working component support plate 18. The left driven wheel 8 is fixed to the left track side plate 4 via a shaft and bearing, and the right driven wheel 7 is fixed to the right track side plate 6 via a shaft and bearing. The track 1 is fixed to the left drive wheel 3, the right drive wheel 5, and the right track side plate 6 via grooves. The driven wheel 7 and the left driven wheel 8 are adjusted, and the fixed position of the foremost driven wheel is adjusted to tension the track. The motor 2 is fixed to the left track side plate 4 and the right track side plate 6 with screws. The two motors are placed alternately to minimize the gap between the two tracks. The crossbeam square steel 13 is fixed to the left track side plate 4 and the right track side plate 6 by welding and acts as an object to fix the gap between the two tracks. The motor 2 is fixed to the left drive wheel 3 and the right drive wheel 5 by keys and drives them to rotate.

[0027] The weeding working component 55 includes a working component top cover 19, a right-side wire weeding disc 23, a right-side weeding working head 24, a working shaft 25, a bearing seat 26, a left-side weeding working head 27, a left-side wire weeding disc 28, a working shaft sleeve 29, a double-groove A-type V-belt pulley 30, an A-type V-belt 34, and a bearing. The system includes a four-groove A-type V-belt pulley 36, shaft two 37, a double-groove A-type V-belt pulley one 40, a double-groove B-type V-belt pulley 41, a working component base plate 43, an A-type V-belt two 44, a connecting vertical rod 45, a flange 46, shaft one 47, a bearing seat two 48, and a bearing seat support plate 49. Shaft one 47 is fixed to the bearing seat support plate 49 via bearing seat two 48. The bearing seat support plate 49 is fixed to the working component base plate 43 by welding. The double-groove A-type... V-belt pulley 40 is connected to double-groove B-type V-belt pulley 41 via shaft 47. Bearing four-groove A-type V-belt pulley 36 is connected to double-groove A-type V-belt pulley 40 via A-type V-belt 34. Bearing four-groove A-type V-belt pulley 36 is connected to double-groove A-type V-belt pulley 30 via A-type V-belt 44. Connecting vertical rod 45 is fixed to the circular slot on the top cover 19 of the working component with bolts. The fixed position can be adjusted to tension A-type V-belt 44. The circular slot on the flange 46 is fixed to connecting vertical rod 45 with bolts. The fixed position can be adjusted so that the center of the flange 46 coincides with the center of the working shaft 25. Bearing seat 26 is fixed to connecting vertical rod 45 with bolts. The working shaft 25 is fixed to bearing seat 26 with a headless nut. The right weeding head 24 and the left weeding head 27 are fixed to flange 46 with screws to ensure that the orientation of the weeding heads remains unchanged.

[0028] The power supply system 56 includes a generator support frame 9, a generator 10, a battery 12, a weeder base plate 15, a diesel engine starting battery 16, a diesel engine 52, and a B-type V-belt 57. The generator 10 is fixed to the generator support frame 9 by bolts with both positive and negative threads, and the fixed position can be adjusted to tension the B-type V-belt 57. The diesel engine 52 is connected to the generator 10 through the B-type V-belt 57. When the diesel engine 52 is working, it drives the generator 10 to rotate through the belt drive. The generator 10 charges the battery 12 to extend the track walking range. The diesel engine starting battery is fixed to the weeder base plate 15 by bolts and supplies energy for starting the diesel engine.

[0029] The working process of this utility model is as follows:

[0030] Turn on the weeder switch and the remote control to start the diesel engine 52. Part of the power from the diesel engine 52 is transmitted via belt to the left and right wire weeding discs 28 and 23 of the weeding unit, causing them to rotate clockwise and counterclockwise, respectively. Part of the power is also transmitted via belt to the generator 10, which supplies electricity to the battery 12 of the walking system, thereby extending the range of the walking system.

[0031] After adjusting the height of the weeding component from the ground using the remote control, the machine can be moved forward and weeding operations can begin. When the weeding cutter disc is about to touch the ground on rough terrain, the swivel wheel support plate 20, swivel wheel height adjustment plate 21, and swivel wheels 22 at the front of the weeder operate. They can support the top cover 19 of the working component to keep the weeding cutter disc at a certain distance from the ground. When the swivel wheels 22 are working, the safety rope 33 is released. In addition, due to the flexible connection, the weeding component can rotate relative to the machine body, preventing the entire machine from being lifted up when the swivel wheels are working. This has no impact on the chassis walking system and does not affect the contact between the tracks and the ground.

[0032] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A rotary blade weeding machine for narrow-width tea gardens, characterized in that: The system includes a weeding component lifting and contouring system, a tracked universal chassis, and a weeding working component. Both the weeding component lifting and contouring system and the power supply system are mounted on the tracked universal chassis. The weeding working component uses a weeding disc for weeding. The weeding component lifting and contouring system includes a four-bar linkage, a multi-stage belt drive mechanism, a safety rope mechanism, and a housing. The multi-stage belt drive mechanism is hinged to the four-bar linkage, and the housing is fitted over the four-bar linkage and the multi-stage belt drive mechanism. The four-bar linkage is hinged to the housing. The output end of the multi-stage belt drive mechanism is connected to a drive motor, and the output end is connected to the weeding working component. The drive motor drives the weeding working component to rotate for weeding via the multi-stage belt drive mechanism. The safety rope mechanism is mounted on the tracked universal chassis, and the movable end of the safety rope is connected to the housing. The safety rope mechanism is used to adjust and limit the lowest downward position of the housing.

2. The rotary cutter head narrow-width tea garden weeding machine according to claim 1, characterized in that, The front of the outer casing is provided with an L-shaped rod, and the lower end of the L-shaped rod is provided with a rolling wheel. When the rolling wheel rolls on the ground, it can drive the outer casing to move up and down with the ground, thereby driving the weeding disc to move up and down to achieve contouring.

3. The rotary cutter head narrow-width tea garden weeding machine according to claim 1, characterized in that, The weeding disc includes multiple steel wire weeding rods arranged along the central axis.

4. The rotary cutter head narrow-width tea garden weeding machine according to claim 1, characterized in that, The safety rope mechanism includes a steel wire rope, a fixed pulley support frame, and a hydraulic push rod. The hydraulic push rod is vertically mounted on the base plate of the working component. One end of the steel wire rope is fixed to the upper movable end of the hydraulic push rod, and the other end passes through the fixed pulley support frame and is connected to the outer shell. The hydraulic push rod is used to move the steel wire rope up and down by moving up and down, thereby moving the outer shell up and down to adjust the height of the weeding disc.

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