A self-propelled, range-extended, reciprocating cutter with adjustable blade width and height for tea garden side pruning.

Abstract

This utility model relates to a self-propelled, extended-range, reciprocating tea garden side-pruning machine with adjustable cutter width and height. It includes a tracked universal chassis, a pruning component, and a height adjustment mechanism. Both the pruning component and the height adjustment mechanism are mounted on the tracked universal chassis. The tracked universal chassis drives the pruning machine forward along the ground. The pruning component is used to prune the tea trees and is mounted on the height adjustment mechanism. This utility model uses a height adjustment device to adjust the cutter height according to different needs, meeting the pruning requirements of different ridge widths. Simultaneously, the reciprocating cutter itself can have its angle adjusted by adjusting screws, effectively pruning branches of different diameters. It meets the requirements for shaping pruning of young tea trees and light pruning of mature tea trees. This pruning machine can significantly improve the mechanization level of pruning in hilly tea gardens, reduce manual labor intensity, and improve tea production efficiency and quality, and has broad application value.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment, specifically a self-propelled extended-range reciprocating cutter with adjustable blade width and height for tea garden side pruning. Background Technology

[0002] Over the past decade, my country's tea plantation area has rapidly expanded from 35.51 million mu in 2013 to 51.45 million mu in 2023, with almost all of the increase concentrated in hilly and mountainous areas such as Zhejiang, Fujian, Yunnan, and Guizhou. These areas have altitudes of 200–800 meters, slopes of 15°–35°, and narrow, elongated plots of 0.2–3 mu each, with row spacing of 1.2–1.8 meters and a height difference of 0.3–0.8 meters between rows. The surface often contains obstacles such as rocks, tree stumps, and drainage ditches. Traditional manual "half-monthly pruning" yields less than 0.5 mu per person per day, and the labor cost has risen to 280–320 yuan per person per day. The concentrated pruning window during the spring tea season is only 7–10 days, resulting in a labor shortage of over 30%. This directly leads to untimely maintenance of tea bush canopy, uneven sprouting of the following spring tea, and a 5%–8% decrease in fresh leaf yield.

[0003] To alleviate labor shortages, handheld / hand-held products such as the KM3CJ-35 double-sided trimming machine and single-person lithium-ion battery-powered handheld hedge trimmer have emerged in China over the past five years. These machines weigh 8–12 kg and have blades 0.5–0.8 m long. By changing the shims or flipping the blade holder, the width can be adjusted to 200–400 mm and the tilt angle to ±15°, allowing for light trimming of canopy surfaces on gentle slopes (<15°). However, limited by human carrying capacity, insufficient ground adhesion, high center of gravity, and lack of contouring capabilities, operators in hilly tea gardens with slopes >20° or surface undulations >150 mm need to frequently adjust their posture. The blades are prone to catching soil or missing cuts, resulting in a work efficiency of only 1.2–1.5 mu / hour, without significantly reducing labor intensity.

[0004] Foreign self-propelled tea pruning machines, such as the Japanese ARS PDS-230 and the German STIHL HS 87R, employ 4.8–7.0kW gasoline engines, rubber tracked or wheeled chassis, and hydraulic or servo motor-driven reciprocating double-acting blades, enabling deep pruning in flat tea gardens. However, they cannot adapt to differences in elevation between rows or obstacles like rocks. Furthermore, the fixed blade height of foreign models prevents rapid adjustment based on tea variety (shrub type, semi-arbor type) and canopy height at different growth stages, resulting in a less than 30% applicability rate in hilly tea gardens in my country.

[0005] Therefore, hilly tea gardens urgently need a lightweight, self-propelled, extended-range, reciprocating side-pruning machine with adjustable width and height. This equipment is not only suitable for side-pruning and canopy shaping in tea gardens, but can also be used for side-pruning of hedges, vineyards, and citrus orchards. It has practical and long-term significance for promoting the full mechanization of the production of characteristic crops in hilly areas of my country and enhancing international competitiveness. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a self-propelled, extended-range, reciprocating cutter with adjustable blade width and height for tea garden side pruning, addressing the above-mentioned shortcomings.

[0007] To solve the above technical problems, the present invention adopts the following technical solution:

[0008] A self-propelled, extended-range, reciprocating cutter with adjustable width and height for tea garden side pruning includes a tracked universal chassis, a pruning component, a width adjustment mechanism, and a height adjustment mechanism. The pruning component and width adjustment mechanism are both mounted on the tracked universal chassis. The tracked universal chassis drives the pruning machine forward along the ground. The pruning component is used to prune tea trees and is mounted on the height adjustment mechanism. The height adjustment mechanism includes multiple vertically arranged hollow steel pipe sets. Each hollow steel pipe set includes two nested hollow steel pipes, with multiple through-holes evenly distributed on the outer side of the pipes from top to bottom. The two nested hollow steel pipes are fixed together by bolts inserted into the holes. Changing the position of the inserted holes changes the height of the height adjustment mechanism and the pruning component. Two height adjustment mechanisms are symmetrically arranged on the width adjustment mechanism, and the width adjustment mechanism is used to adjust the horizontal distance between the two height adjustment mechanisms.

[0009] Furthermore, the universal tracked chassis includes tracks, a motor, a left drive wheel, a left track side plate, a right drive wheel, a right track side plate, a right driven wheel, a left driven wheel, a crossbeam square steel, and a working component support plate. The left driven wheel is fixed to the left track side plate via an axle and bearing, and the right driven wheel is fixed to the right track side plate via an axle and bearing. The tracks are fixed to the left drive wheel, right drive wheel, right driven wheel, and left driven wheel via grooves. The motor is fixed to the left track side plate and the right track side plate via bolts. The crossbeam square steel is fixed to the left track side plate and the right track side plate by welding. The motor is fixed relative to the left drive wheel and the right drive wheel via a key.

[0010] Furthermore, the trimming component includes a reciprocating cutter, a cutter motor, a slider connecting plate, and a cutter fixing plate. The cutter fixing plate is welded to the slider connecting plate, and the slider connecting plate is fixed to the width adjustment mechanism. The reciprocating cutter is detachably connected to the cutter fixing plate by bolts, and the angle between the reciprocating cutter and the slider connecting plate in the vertical plane is adjustable. The cutter motor is used to drive the reciprocating cutter.

[0011] Furthermore, the width adjustment mechanism includes a slide rail and a slider. The slide rail is fixed on a tracked universal chassis, and the slider is located at both ends of the slide rail. The slider can move on the slide rail and is detachably connected to the slide rail by bolts. Each slider is fixed with a slider connecting plate.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0013] The advantages of this invention are that the machine's overall width is ≤600mm, allowing it to move flexibly between tea ridges in tea gardens without damaging the tea trees. During operation, the engine drives the generator to power the tracked chassis and charge the battery, ensuring continuous pruning operations. The height adjustment device allows for adjustment of the cutter height according to different needs. The working range of the cutter can be flexibly adjusted within 50-70cm by adjusting the slider, and the slider can be locked to meet the pruning requirements of different ridge widths. Simultaneously, the reciprocating cutter itself can have its angle adjusted by adjusting screws, effectively pruning branches of different diameters. It meets the requirements for shaping pruning of young tea trees and light pruning of mature tea trees. This pruning machine can significantly improve the mechanization level of pruning in hilly tea gardens, reduce manual labor intensity, and improve tea production efficiency and quality, thus having broad application value.

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structural components of a tracked universal chassis;

[0017] Figure 3 This is a schematic diagram of the trimmed component;

[0018] The list of components represented by each number in the attached diagram is as follows:

[0019] 1. Tracked universal chassis; 2. Trimming components; 3. Width adjustment mechanism; 4. Diesel engine; 6. Tracks; 7. Motor; 8. Left drive sprocket; 9. Left track side plate; 10. Right drive sprocket; 11. Right track side plate; 12. Right driven sprocket; 13. Left driven sprocket; 14. Crossbeam square steel; 15. Working component support plate; 16. Reciprocating cutter; 17. Cutter motor; 18. Slider connecting plate; 19. Cutter fixing plate; 20. Slider; 21. Slide rail; 22. Base plate Detailed Implementation

[0020] 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.

[0021] 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.

[0022] like Figure 1-3 As shown, a self-propelled extended-range reciprocating cutter with adjustable horizontal width and height for narrow-width tea garden side pruning includes: a tracked universal chassis 1, a pruning component 2, a height adjustment mechanism 3, a diesel engine 4, and a control unit 5.

[0023] The tracked universal chassis 1 includes tracks 6, a motor 7, a left drive wheel 8, a left track side plate 9, a right drive wheel 10, a right track side plate 11, a right driven wheel 12, a left driven wheel 13, a crossbeam square steel 14, and a working component support plate 15. The left driven wheel 13 is fixed to the left track side plate 9 by a shaft and bearing. The right driven wheel 12 is fixed to the right track side plate 11 by a shaft and bearing. The track 6 is fixed to the left drive wheel 8, the right drive wheel 10, the right driven wheel 12, and the left driven wheel 13 by grooves. The motor 7 is fixed to the left track side plate 9 and the right track side plate 11 by bolts. The crossbeam square steel 14 is fixed to the left track side plate 9 and the right track side plate 11 by welding. The motor 7 is fixed to the left drive wheel 8 and the right drive wheel 10 by a key.

[0024] The trimming component 2 includes a reciprocating cutter 16, a cutter motor 17, a slider connecting plate 18, a cutter fixing plate 19, a slider 20, and a slide rail 21. The cutter fixing plate 19 is welded to the slider connecting plate 18, and the reciprocating cutter 16 is connected through the cutter fixing plate 19. The cutter fixing plate 19 is fixed to the reciprocating cutter 16 by two bolts.

[0025] The height adjustment mechanism 3 consists of four cylindrical hollow steel pipes of different outer diameters. The hollow steel pipes of different outer diameters are nested together, and each steel pipe has evenly distributed through holes. The height can be adjusted according to different height requirements and is fixed by bolts. The steel pipes of different outer diameters are respectively welded to the working component support plate 15 and the base plate 22.

[0026] The width adjustment mechanism includes a slide rail and a slider. The slide rail is fixed on a tracked universal chassis. The slider is located at the left and right ends of the slide rail. The slider can move on the slide rail and is detachably connected to the slide rail by bolts. Each slider is fixed with a slider connecting plate.

[0027] The working process of this utility model is as follows:

[0028] Turn on the track chassis switch and start the diesel engine 4. Part of the power from the diesel engine 4 is transmitted to the generator via the belt. The generator then supplies electricity to the battery of the walking system, thereby extending the range of the walking system.

[0029] Adjust the width of the trimming component using the electric linear actuator remote control, then remotely control the machine to move forward and begin trimming. When the width needs adjustment, use the electric linear actuator remote control to make adjustments for better trimming results.

[0030] 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 self-propelled, range-extended, reciprocating cutterbar width and height adjustable side trimmer for tea gardens, characterized in that, The device includes a tracked universal chassis, a pruning component, a width adjustment mechanism, and a height adjustment mechanism. The pruning component and width adjustment mechanism are both mounted on the tracked universal chassis. The tracked universal chassis drives the pruning machine forward along the ground. The pruning component is used to prune tea trees and is mounted on the height adjustment mechanism. The height adjustment mechanism includes multiple vertically arranged hollow steel pipe sets. Each set includes two nested hollow steel pipes, with multiple through-holes evenly distributed on the outer side of each pipe from top to bottom. The two nested hollow steel pipes are fixed together by bolts inserted into the holes. Changing the position of the inserted holes alters the height of the height adjustment mechanism and the pruning component. The width adjustment mechanism has two symmetrically arranged height adjustment mechanisms on its left and right sides, used to adjust the horizontal distance between the two height adjustment mechanisms.

2. The self-propelled extended-range reciprocating cutter with adjustable blade width and height as described in claim 1, characterized in that, The universal tracked chassis includes tracks, a motor, a left drive wheel, a left track side plate, a right drive wheel, a right track side plate, a right driven wheel, a left driven wheel, a crossbeam square steel, and a working component support plate. The left driven wheel is fixed to the left track side plate via an axle and bearing, and the right driven wheel is fixed to the right track side plate via an axle and bearing. The tracks are fixed to the left drive wheel, right drive wheel, right driven wheel, and left driven wheel via grooves. The motor is fixed to the left and right track side plates with bolts. The crossbeam square steel is fixed to the left and right track side plates by welding. The motor is fixed relative to the left and right drive wheels via a key.

3. The self-propelled extended-range reciprocating cutter with adjustable blade width and height as described in claim 1, characterized in that, The trimming component includes a reciprocating cutter, a cutter motor, a slider connecting plate, and a cutter fixing plate. The cutter fixing plate is welded to the slider connecting plate, and the slider connecting plate is fixed to the width adjustment mechanism. The reciprocating cutter is detachably connected to the cutter fixing plate by bolts, and the angle between the reciprocating cutter and the slider connecting plate in the vertical plane is adjustable. The cutter motor is used to drive the reciprocating cutter.

4. The self-propelled extended-range reciprocating cutter with adjustable blade width and height as described in claim 3, characterized in that, The width adjustment mechanism includes a slide rail and a slider. The slide rail is fixed on a tracked universal chassis. The slider is located at both ends of the slide rail. The slider can move on the slide rail and is detachably connected to the slide rail by bolts. Each slider is fixed with a slider connecting plate.

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