A shaping and pruning device for waxberry planting

Abstract

The utility model relates to a shaping pruning device for waxberry planting belongs to the technical field of waxberry planting. Mainly include telescopic link, battery, support plate, motor, drive assembly, hook, support rod and cutting mechanism. Telescopic link is hollow structure, and the bottom end is installed with battery and power switch. The support plate is installed at the top of telescopic link through bolt, and the support rod is slidably installed at the top of telescopic link through linear bearing. Drive assembly includes first swing link, guide rod and tension spring, and connecting rod, second swing link and second tension spring. Cutting mechanism includes motor, cutting knife and protective shell. The hook is U-shaped structure, and is connected with the top of support rod and forms inverted V-shaped claw structure, and the contact surface is equipped with rubber pad. The device realizes the accurate positioning and cutting function of branch through the sliding cooperation of telescopic link and support rod and the lever transmission mechanism of drive assembly, and the efficiency and quality of waxberry tree pruning operation are improved significantly.

Description

Technical Field

[0001] This utility model belongs to the field of bayberry planting technology, specifically relating to a shaping and pruning device for bayberry planting. Background Technology

[0002] The waxberry tree is an important economic fruit tree in my country, characterized by its vigorous growth and dense branches. Scientific shaping and pruning are key technical measures to achieve high, stable, and high-quality waxberry production. Pruning can optimize the tree structure, improve ventilation and light penetration, reduce the occurrence of pests and diseases, and facilitate later fruit harvesting.

[0003] Currently, the pruning of bayberry trees mainly relies on two methods. One is manual pruning using pruning shears or high-branch shears. This method produces clean cuts and causes less damage to the tree, but it is entirely manual, resulting in high labor intensity and low efficiency. This is especially true when dealing with thick or high branches in large orchards, where the process is extremely time-consuming and labor-intensive, severely impacting the pruning progress. The other method uses power tools such as chainsaws. These tools cut quickly, but when cutting round, smooth branches, the high-speed chain rotation can cause the branch to rotate or slip at the cut, leading to instability. This not only increases the operator's safety risks but also easily causes branch splitting or rough cuts, hindering wound healing. Therefore, existing pruning methods suffer from high labor intensity, low efficiency, and insufficient operational stability in their structural design. There is an urgent need for a pruning device that can balance pruning efficiency and operational stability to solve these problems. Utility Model Content

[0004] In order to overcome the problems in the prior art, this utility model provides a shaping and pruning device for bayberry planting, so as to solve the technical problems in the prior art that manual pruning tools are labor-intensive and inefficient, and electric pruning tools are prone to branch rotation and slippage, rough cuts and insufficient operational stability when cutting round and smooth branches.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A shaping and pruning device for bayberry cultivation mainly includes a telescopic rod, a battery, a support plate, a drive assembly, a hook, a support rod, and a cutting mechanism; the telescopic rod has a hollow structure, with a battery and a power switch installed at its bottom end; the support plate is bolted to the top of the telescopic rod; the bottom end of the support rod passes through a through hole in the support plate and is slidably mounted on the top of the telescopic rod via a linear bearing; a limit block is connected to the bottom end of the support rod, and a hook for hooking branches is connected to the top end; a drive assembly is installed between the support rod and the support plate; the cutting mechanism is installed on the top of the drive assembly and, under the driving action of the drive assembly, approaches and cuts the branch along one side of the hook; the battery, power switch, and cutting mechanism are connected by a power cord; the hook is bent from a round steel bar, presenting a U-shaped structure with an opening tilted downwards; the open end of the U-shaped hook is fixed to the top of the support rod through an inclined connecting part; the axis of the support rod forms an acute angle with the axis of symmetry of the U-shaped structure, so that the top of the hook forms an inverted V-shaped claw structure; a rubber pad is provided on the contact surface between the hook and the branch.

[0006] The drive assembly includes a first rocker arm, a guide rod, and a first tension spring; the bottom end of the first rocker arm is hinged to a support plate via a pin; a groove extending along the length of the first rocker arm is formed on the first rocker arm; the guide rod is mounted on the support rod, and its axis is perpendicular to the axis of the support rod; one end of the guide rod passes through the groove on the first rocker arm and is connected to a limit block, and the outer wall of the guide rod slides in contact with the groove; the first tension spring is installed inside the telescopic rod, with its bottom end fixed to the inner wall of the telescopic rod and its top end fixed to the bottom end of the support rod.

[0007] The drive assembly includes a connecting rod, a second rocker arm, and a second tension spring; the middle part of the second rocker arm is hinged to the support rod by a pin, and a cutting mechanism is installed at the top; the bottom end of the connecting rod is hinged to the support plate by a pin, and the top end is hinged to the bottom end of the second rocker arm by a pin; the second tension spring is sleeved on the support rod, with its bottom end abutting against the support plate and its top end abutting against the limiting block on the support rod.

[0008] The cutting mechanism includes a motor, a cutting blade, and a protective shell; the motor is mounted on top of the drive assembly and electrically connected to the battery via a power cable, and the cutting blade is mounted on the end of its output shaft; the protective shell is mounted on top of the drive assembly and located outside the cutting blade, forming a semi-enclosed structure.

[0009] The cutting blade is a high-speed rotating circular saw blade; the edge of the circular saw blade has multiple cutting teeth evenly distributed.

[0010] The protective shell is made of high-strength, impact-resistant engineering plastic; the internal space of the protective shell maintains a gap with the cutting blade during high-speed rotation.

[0011] The telescopic rod has a multi-stage sleeve structure, which is composed of multiple high-strength lightweight aluminum alloy pipe sections nested concentrically; the pipe sections are mechanically locked together by built-in ball buckles or spiral locking mechanisms.

[0012] The support plate has two parallel support lugs on its side, and each lug has a pin hole.

[0013] The hook has a U-shaped structure with a smooth arc-shaped inner wall; the rubber pad is made of highly elastic and aging-resistant EPDM rubber material, and its surface is molded with anti-slip texture.

[0014] Two anti-slip handles are fitted on the telescopic rod near the bottom, located at two different heights in the lower part of the telescopic rod. The anti-slip handles are integrally molded from wear-resistant and anti-slip rubber or silicone material, and their surfaces are molded with anti-slip textures or raised particles.

[0015] The beneficial effects of this utility model are: This invention achieves precise positioning of the cutting mechanism relative to the hook through a sliding engagement structure between the telescopic rod and the support rod, combined with a lever transmission mechanism in the drive assembly. The hook employs a specific angled inverted V-shaped claw structure, along with a rubber pad, effectively preventing the branch from slipping during the cutting process. The protective shell of the cutting mechanism ensures operational safety. The entire device is compact, easy to operate, and provides stable cutting, significantly improving the efficiency and quality of bayberry tree pruning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the drive component structure of Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the cutting mechanism structure of Embodiment 1 of this utility model.

[0019] Figure 4 This is a schematic diagram showing the installation position of the anti-slip handle of this utility model.

[0020] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Telescopic rod; 2. Battery; 3. Support plate; 4. Motor; 5. Drive assembly; 6. Hook; 7. Support rod; 8. Cutting mechanism; 9. First swing arm; 10. Guide rod; 11. First tension spring; 12. Connecting rod; 13. Second swing arm; 14. Second tension spring; 15. Cutting blade; 16. Protective shell; 17. Anti-slip handle. Detailed Implementation

[0022] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0023] This utility model discloses a shaping and pruning device for bayberry cultivation, such as... Figure 1 As shown, its structure mainly includes a telescopic rod 1, a battery 2, a support plate 3, a drive assembly 5, a hook 6, a support rod 7, a cutting mechanism 8, and two anti-slip handles 17. The entire device uses the telescopic rod 1 as the main structure, with the support rod 7 sliding linearly inside it. Through the precision transmission of the drive assembly 5, the cutting mechanism 8 is driven to effectively prune the bayberry branches.

[0024] The telescopic rod 1 is a cylindrical hollow structure, typically employing a multi-stage sleeve design, composed of three to four concentrically nested high-strength, lightweight aluminum alloy tubing sections. The sections are mechanically locked in an adjustable manner via built-in ball-end latches or spiral locking mechanisms, allowing for stepless or stepped adjustment of the total length of the telescopic rod 1 to accommodate different trimming heights, such as any length setting within the range of 1.5 meters to 3 meters. The telescopic rod 1 has a central chamber running its length, which houses the power cord and provides sliding guide space for the support rod 7. The overall outer diameter of the telescopic rod 1 is, for example, 40 to 50 millimeters, and the inner wall surface is finely polished to reduce frictional resistance when the support rod 7 slides internally. At the bottom of the telescopic rod 1, a waterproof and dustproof power switch is integrated into its outer wall. This power switch uses a push-button self-locking design, and its internal circuitry is electrically connected to the power cord routed inside the telescopic rod 1. The battery 2 is securely installed within the receiving cavity at the bottom of the telescopic rod 1.

[0025] The battery 2 is a high-capacity lithium-ion battery pack, precisely matching the shape of the inner cavity at the bottom of the telescopic rod 1. It is securely installed within the receiving cavity at the bottom of the telescopic rod 1 via slots and limiting buffer pads. The nominal voltage of the battery 2 is, for example, 18 volts to 24 volts, and the capacity is 4 amp-hours to 6 amp-hours. Its output terminal is electrically connected to the power switch at the bottom of the telescopic rod 1 via multi-strand copper core insulated wires, and provides stable DC power to the motor 4 at the top of the device through power lines running upwards inside the telescopic rod 1. The battery 2 is encased in a flame-retardant and shock-resistant engineering plastic shell to improve its safety and durability in harsh working environments.

[0026] The support plate 3 is a rectangular flat plate structure with a thickness of approximately 8 mm, integrally formed from high-strength, lightweight aluminum alloy material through CNC precision machining. The bottom surface of the support plate 3 is tightly fitted to the top outer wall of the telescopic rod 1. The support plate 3 is secured and detachable mechanically connected to the telescopic rod 1 by four 6 mm diameter countersunk bolts, each passing through a pre-machined 6.5 mm diameter through hole on the support plate 3 and screwed into four M6 threaded holes evenly distributed around the circumference of the top of the telescopic rod 1. This connection method ensures that the support plate 3 can withstand the forces from the drive assembly 5 and the cutting mechanism 8 during trimming operations without loosening or deformation. A 25 mm diameter circular through hole is located at the center of the support plate 3. The inner wall of this hole is precision-bored to accurately guide and support the linear bearing, thereby supporting the smooth sliding of the support rod 7. In addition, two parallel support lugs are pre-set on the side of the support plate 3. Each lug has a pin hole with a diameter of 8 mm, which is used to hinge the bottom of the first rocker arm 9 in the drive assembly 5, providing a stable pivot point for the drive mechanism.

[0027] The hook 6 is integrally bent from a single piece of high-strength stainless steel with a thickness of 10 mm to 20 mm using a precise cold-bending process, forming a U-shaped structure with an opening tilted downwards. This U-shaped structure has a smooth, arc-shaped inner wall, preventing damage to the branch surface when hooking and gripping the branch. The open end of the hook 6 is securely connected to the top of the support rod 7 via an inclined connecting part, either by welding or threading. Specifically, the axis of the support rod 7 forms an acute angle of approximately 35 to 60 degrees with the axis of symmetry of the U-shaped hook 6. This structure creates a stable inverted V-shaped claw structure at the top of the hook 6. This inverted V-shaped claw structure can effectively accommodate various sizes of bayberry branches ranging from 10 mm to 50 mm in diameter, providing a firm and non-slip gripping ability. The inner surface of the hook 6 that actually contacts the branch is embedded or adhered with a non-slip, wear-resistant rubber pad with a thickness of approximately 2.5 mm. The rubber pad is made of highly elastic and aging-resistant EPDM rubber material, with a fine anti-slip texture molded on its surface to further increase the coefficient of friction with the branch, effectively preventing the hook from slipping during the cutting process and ensuring the accuracy of the cut and the smoothness of the cut. The overall structure of the hook 6 not only ensures a stable grip on the branch, but also takes into account the convenience and efficiency of the operator in hooking the target branch at different angles.

[0028] The support rod 7 is a high-precision ground solid cylindrical steel rod, such as 45# steel or GCr15 bearing steel, with a hard chrome plated surface to provide superior wear resistance and an extremely low coefficient of sliding friction. The diameter of the support rod 7 is, for example, 20 mm to 22 mm, precisely matching the inner diameter of the central through-hole in the support plate 3 and the inner diameter of the inner cavity at the top of the telescopic rod 1, ensuring smooth, wobbly linear reciprocating motion within the telescopic rod 1. The bottom end of the support rod 7 precisely penetrates the circular through-hole in the support plate 3 and is slidably supported by a linear bearing built into the top of the telescopic rod 1. The linear bearing is a precision ball linear bearing, its housing fixed to the inner wall of the top of the telescopic rod 1 by an interference fit or set screws. The balls maintain close contact with the outer surface of the support rod 7, thus providing high-precision, low-friction linear guidance. At the top of the support rod 7, immediately below the linear bearing, is a circular limiting block. The limiting block is securely connected to the support rod 7 via threads. Its outer diameter is larger than the inner diameter of the linear bearing, thus preventing the support rod 7 from dislodging from the telescopic rod 1 when moving upwards under external force. A hook 6 for hooking tree branches is securely connected to the top of the support rod 7 via high-strength welding or bolting. Under the elastic force of the first tension spring 11, the support rod 7 is typically at the bottom of its stroke when the device is stationary.

[0029] In this embodiment, the driving component 5 is as follows: Figure 2 and Figure 3 As shown, its structure mainly includes a first swing arm 9, a guide rod 10, and a first tension spring 11. The first swing arm 9 is a slender strip-shaped metal rod, for example, made of high-strength aluminum alloy sheet by CNC cutting, possessing excellent rigidity and bending resistance. The length of the first swing arm 9 is, for example, 150 mm to 200 mm, and the width is approximately 30 mm. The bottom end of the first swing arm 9 has a circular hole with a diameter of 8 mm, which is hinged to the pin hole of a U-shaped bracket pre-set on the side of the support plate 3 through a high-precision pin. The two ends of the pin are limited and fixed by cotter pins or snap rings, allowing the first swing arm 9 to rotate freely around the pin in a vertical plane. A straight groove extending along its length is formed on the body of the first swing arm 9, the length of which is, for example, 80 mm, and the width is, for example, 12 mm. The inner wall surface of the groove is finely ground or coated with a low-friction polymer coating to ensure that the guide rod 10 slides smoothly within it. The groove has a rectangular cross-sectional shape, and its width is slightly larger than the diameter of the guide rod 10 to provide precise guidance.

[0030] The guide rod 10 is a precision-machined cylindrical solid steel rod with a diameter of, for example, 10 mm. Its surface is hard chrome plated, providing high hardness and wear resistance. The guide rod 10 is securely mounted on the side wall of the support rod 7 via press-fitting or threaded connection, with its axis perpendicular to the axis of the support rod 7, forming a T-shaped structure. One end of the guide rod 10, the end furthest from the support rod 7, precisely passes through a groove on the first swing rod 9, and a limit block is threadedly connected to this end. The limit block is disc-shaped, with a diameter of, for example, 20 mm, larger than the width of the groove. It is securely fixed to the end of the guide rod 10 by a lock nut, preventing the guide rod 10 from dislodging from the groove while maintaining its sliding freedom within the groove. When the operator externally pulls the telescopic rod 1 downwards, causing the support rod 7 to move upwards relative to its axis, the guide rod 10 mounted on it slides along the length of the groove on the first swing rod 9, following the movement of the support rod 7. The cylindrical outer wall of the guide rod 10 maintains a tight and low-friction sliding contact with the inner wall of the groove. This sliding force drives the first swing rod 9 to rotate around its hinge point on the support plate 3 at a preset angle, causing the cutting mechanism 8 to gradually rotate and approach the tree branch to cut it.

[0031] like Figure 3 As shown, the first tension spring 11 is a helical compression spring, precisely wound with high-elasticity stainless steel spring wire, possessing excellent fatigue strength and resilience. The inner diameter of the first tension spring 11 is slightly smaller than the inner diameter of the telescopic rod 1, allowing it to be installed within the internal cavity of the telescopic rod 1. The bottom end of the first tension spring 11 is securely fixed to the inner wall of the telescopic rod 1 near its bottom end via a ring hook or welded fixing seat. The top end of the first tension spring 11 is also fixedly connected to the bottom limiting block of the support rod 7 via a similar hook or connecting ring. When the device is stationary, the first tension spring 11 is in a certain pre-stretched state, with its axial elastic force parallel to and downwards from the direction of movement of the support rod 7. When an external force causes the support rod 7 to move upwards relative to the telescopic rod 1, the first tension spring 11 is stretched and stores energy; when the external force is released, the first tension spring 11, through its contraction elastic force, pulls the support rod 7 downwards relative to the telescopic rod 1, returning it to its initial bottom position, thereby ensuring the stability of the device and preparing for the next round of cutting operations, and providing the operator with a slight sense of return resistance.

[0032] like Figure 2 and Figure 3As shown, the cutting mechanism 8 mainly includes a motor 4, a cutting blade 15, and a protective shell 16. The motor 4 is a high-speed brushless DC motor with high speed and high torque, ensuring sufficient cutting force for the cutting blade 15 during high-speed rotation. The motor 4 is fixedly mounted on a pre-set motor mounting base at the top of the first swing arm 9 via four hexagonal socket bolts passing through mounting holes on the motor body. This motor mounting base is typically a one-piece cast aluminum alloy or machined part, securely connected to the top of the first swing arm 9 by welding or bolts. The output shaft end of the motor 4 has a keyway structure for tight engagement with the center mounting hole of the cutting blade 15 to achieve power transmission. The input end of the motor 4 is connected to the power line inside the telescopic rod 1 via a wear-resistant insulated power cord, ultimately electrically connected to the battery 2 at the bottom of the telescopic rod 1. Its start and stop are controlled by a power switch on the telescopic rod 1. The outer shell of the motor 4 is made of corrosion-resistant aluminum alloy, providing excellent heat dissipation and ensuring stable performance during long-term operation.

[0033] The cutting blade 15 is a high-speed rotating circular saw blade, made of high-quality alloy tool steel or inlaid with carbide tips, ensuring excellent sharpness and wear resistance when cutting bayberry branches at high speed. The outer diameter of the cutting blade 15 is, for example, 80 mm to 120 mm, and its thickness is approximately 1.5 mm to 2.5 mm, with multiple cutting teeth evenly distributed along its edge. Each tooth is precision ground and hardened to achieve an ideal cutting angle and edge sharpness, enabling smooth, burr-free cuts of bayberry branches and reducing damage to the branches. A mounting hole matching the diameter of the motor 4 output shaft is provided in the center of the cutting blade 15. It precisely engages with the motor 4 output shaft via a keyway or D-hole and is securely fixed using a lock nut and washer, ensuring that the cutting blade 15 will not loosen or fall off during high-speed rotation, thus guaranteeing the stability and safety of the cutting operation.

[0034] The protective shell 16 is made of high-strength, impact-resistant engineering plastics, such as ABS or polycarbonate, using injection molding. The protective shell 16 has a semi-circular or U-shaped cover structure, designed to cover most of the high-speed rotating cutting blade 15, effectively preventing accidental contact with the cutting blade 15 during operation. It also blocks debris from flying during cutting, significantly improving operational safety. The protective shell 16 is securely mounted to the top of the first swing arm 9 with several self-tapping screws or mechanical bolts, specifically in front of the motor 4, completely enclosing the non-working area of ​​the cutting blade 15. The opening of the protective shell 16 is precisely oriented towards the branch to be cut, allowing the cutting blade 15 to contact the target branch without obstruction and ensuring the operator can clearly observe the cutting point. The internal space of the protective shell 16 is optimized to ensure a minimum 5 mm gap between the cutting blade 15 and the inner wall of the protective shell 16 during high-speed rotation, preventing friction or collision.

[0035] The anti-slip handle 17 is integrally molded from wear-resistant, anti-slip rubber or silicone material. Its surface is molded with fine anti-slip textures or raised particles to increase friction when held, preventing hand slippage and providing a firm grip even in wet or sweaty environments. The inner diameter of the handle 17 is slightly smaller than the outer diameter of the telescopic rod 1, and it is securely fitted onto the outside of the telescopic rod 1 through interference fit or bonding. This invention features two anti-slip handles 17, located at two different heights in the lower region of the telescopic rod 1. One anti-slip handle 17 is located, for example, approximately 180 mm from the bottom of the telescopic rod 1, providing a stable grip for one hand; the other anti-slip handle 17 is located, for example, approximately 400 mm above, providing auxiliary support and operation for the other hand, together providing a stable two-handed manual operation posture. This dual anti-slip handle 17 configuration conforms to ergonomic principles, effectively reducing hand and arm fatigue during prolonged trimming work, while enhancing the overall stability and operational safety of the device.

[0036] The shaping and pruning device of this utility model achieves the following main action relationships through the precise cooperation of the above-mentioned structural components: In the initial state of the device, the support rod 7 is at its lowest position inside the telescopic rod 1 under the downward elastic force of the first tension spring 11. At this time, the cutting mechanism 8 is driven away from the hook 6 by the first swing rod 9, maintaining a safe distance. When it is necessary to prune branches, the operator first adjusts the length of the telescopic rod 1 to adapt to the height of the branches, and then holds the anti-slip handle 17 to hook the target branch through the hook 6, so that the branch is firmly locked into the inverted V-shaped claw structure. Subsequently, the operator applies a downward force to the telescopic rod 1, pulling the telescopic rod 1 to move downward along the axis of the support rod 7, further driving the support plate 3 to move downward. At this time, the first swing rod 9 is forced to move downward, and under the guidance of the guide rod 10, the inner wall of the groove of the first swing rod 9 slides in contact with the guide rod 10. The sliding contact force of the guide rod 10 drives the first swing rod 9 to rotate around its pin on the support plate 3. As the first swing arm 9 rotates, the cutting mechanism 8 mounted on its top gradually approaches the branch held by the hook 6 along a preset arc trajectory. When the cutting blade 15 in the cutting mechanism 8 contacts the branch, the operator starts the motor 4 via the power switch, driving the cutting blade 15 to rotate at high speed to cut the branch. The rubber pad and inverted V-shaped structure on the hook 6 ensure that rotation or slippage does not occur during the cutting process, thus ensuring a smooth and neat cut. After cutting, the operator releases the downward force on the telescopic rod 1, and the elastic restoring force of the first tension spring 11 pulls the telescopic rod 1 back upward. The telescopic rod 1 drives the first swing arm 9 to rotate in the opposite direction through the support plate 3, causing the cutting mechanism 8 to move away from the hook 6 again and return to its initial safe position, completing one pruning cycle. The entire process is structurally stable and operates smoothly, significantly improving the efficiency and quality of pruning operations.

[0037] In another embodiment of this utility model, the structure of the driving component 5 is different. For example... Figure 5 As shown, this drive assembly 5 mainly includes a connecting rod 12, a second rocker arm 13, and a second tension spring 14, which replace the first rocker arm 9, guide rod 10, and first tension spring 11 in the first embodiment.

[0038] The connecting rod 12 is a rigid rod with a fixed rectangular cross-section, precision-machined from high-strength alloy steel or hard aluminum, ensuring its structural strength and stability during force transmission. The bottom end of the connecting rod 12 has a 6mm diameter hole, through which it is hinged to a pre-set pivot seat on the support plate 3 via a precision-machined pin. The pivot seat is a U-shaped or L-shaped bracket, securely connected to the support plate 3 by bolts or welding. Both ends of the pin are fixed by snap rings or nuts, ensuring that the connecting rod 12 can rotate freely around the pin in a vertical plane. The top end of the connecting rod 12 also has a 6mm diameter hole, through which it is hinged to the bottom end of the second swing rod 13 via another pin. These two pin hinge points ensure that the connecting rod 12 can act as a force transmission medium, converting the linear motion of the support rod 7 into the rotational motion of the second swing rod 13. The length of the connecting rod 12 and the positions of the two hinge points are precisely calculated to obtain an ideal leverage ratio and motion trajectory.

[0039] The second lever 13 is a rigid lever arm of moderate length, typically made of a material similar to the connecting rod 12, such as high-strength aluminum alloy or steel, to ensure sufficient structural strength and torsional stiffness. At a specific position along its length, the second lever 13 has an 8mm diameter circular hole, which is hinged to a pre-set connecting lug or bearing seat on the upper part of the support rod 7 via a high-precision pin. The connecting lug is securely connected to the side wall of the support rod 7 by welding or bolting. The axis of the pin is perpendicular to the axis of the support rod 7, allowing the second lever 13 to swing in an arc around this hinge point on the side of the support rod 7. The top of the second lever 13 has a dedicated mounting structure, such as a flat mounting surface and multiple threaded holes, for securely mounting the motor 4 and protective housing 16 in the cutting mechanism 8. When the support rod 7 moves downward under force, the thrust of the connecting rod 12 acts on the bottom end of the second swing rod 13, and the second swing rod 13 rotates around its hinge point on the support rod 7, thereby causing the cutting mechanism 8 installed on its top to swing accordingly, so that the cutting blade 15 gradually approaches and cuts the tree branch.

[0040] The second tension spring 14 is a helical compression spring made of high-elasticity stainless steel. Its inner diameter is slightly larger than the outer diameter of the support rod 7, allowing it to be stably fitted onto the outer surface of the support rod 7 without affecting the linear movement of the support rod 7. The bottom end of the second tension spring 14 is in close contact with the upper surface of the support plate 3, and the top end of the second tension spring 14 is in close contact with a pre-set annular limiting block at the upper position of the support rod 7. The limiting block is typically a ring-shaped component fixed to the outer surface of the support rod 7 by threads or set screws. When the device is stationary, the second tension spring 14 is in a pre-stretched state, and its upward elastic force continuously acts on the support rod 7, pulling the support rod 7 downward to its initial bottom position. When the operator moves the telescopic rod 1 downward by applying an external force, the second tension spring 14 is further stretched, storing elastic potential energy; when the external force is released, the elastic restoring force of the second tension spring 14 pulls the telescopic rod 1 upward back, restoring it to its original position. The second tension spring 14 is mainly used to maintain the initial position of the telescopic rod 1 and to provide a restoring force for the operating handle. It is similar in function to the first tension spring 11 in the first embodiment, but its installation position and force application method are different, and it is more convenient to install it on the outside of the support rod 7.

[0041] In this embodiment, the structure and function of the cutting mechanism 8 are the same as in the first embodiment, including a motor 4, a cutting blade 15, and a protective shell 16. The cutting mechanism 8 is securely mounted on the top of the second swing arm 13 by bolts or welding, and moves with the swing of the second swing arm 13. The power cord of its motor 4 is also laid through the inside of the telescopic rod 1 and electrically connected to the battery 2 and the power switch. The structure and installation method of the hook 6, telescopic rod 1, battery 2, support plate 3, and anti-slip handle 17 are exactly the same as in the first embodiment, and will not be described again here.

[0042] The working principle of this embodiment is as follows: In the initial state, the support rod 7 is at its lowest position within the telescopic rod 1 under the downward pulling force of the second tension spring 14. Through the linkage of the connecting rod 12, the second swing rod 13 drives the cutting mechanism 8 to a safe position away from the hook 6. When the operator pulls the telescopic rod 1 downward, the telescopic rod 1 slides downward in a straight line, driving the support plate 3 and the connecting rod 12 to move downward, so that the hinge point on the support rod 7 moves away from the support plate 3. The movement of the connecting rod 12 pulls the bottom end of the second swing rod 13, causing the second swing rod 13 to rotate around its hinge point in the middle of the support rod 7. As the second swing rod 13 rotates, the cutting mechanism 8 installed at its top also swings, causing the cutting blade 15 to gradually approach the branch held by the hook 6. When the cutting blade 15 contacts the branch, the motor 4 is started to perform the cutting operation. After the cutting is completed, the force is released, the second tension spring 14 pulls the telescopic rod 1 back upward, driving the connecting rod 12 and the second swing rod 13 to reset, so that the cutting mechanism 8 moves away from the hook 6 again. Although the structural details of the drive component 5 in these two embodiments differ, they both realize the function of pruning bayberry branches by converting the linear motion of the support rod 7 into the swing motion of the cutting mechanism 8.

[0043] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A shaping and pruning device for bayberry cultivation, characterized in that: The device includes a telescopic rod (1), a battery (2), a support plate (3), a drive assembly (5), a hook (6), a support rod (7), and a cutting mechanism (8). The telescopic rod (1) has a hollow structure, with a battery (2) and a power switch installed at its bottom. The support plate (3) is bolted to the top of the telescopic rod (1). The bottom of the support rod (7) passes through a through hole in the support plate (3) and is slidably mounted on the top of the telescopic rod (1) using a linear bearing. A limit block is connected to the bottom of the support rod (7), and a hook (6) for hooking branches is connected to the top. The drive assembly (5) is installed between the support rod (7) and the support plate (3). The cutting mechanism (8) is installed on the top of the drive assembly (5). Under the driving action of the drive assembly (5), it approaches and cuts the tree branch along one side of the hook (6). The battery (2), power switch and cutting mechanism (8) are connected by a power line. The hook (6) is made of a round steel bent into a U-shaped structure with the opening tilted downward. The open end of the U-shaped hook (6) is fixed to the top of the support rod (7) through an inclined connecting part. The axis of the support rod (7) forms an acute angle with the axis of symmetry of the U-shaped structure, so that the top of the hook (6) forms an inverted V-shaped claw structure. A rubber pad is provided on the contact surface between the hook (6) and the tree branch.

2. The pruning and shaping device for bayberry cultivation according to claim 1, characterized in that, The drive assembly (5) includes a first rocker arm (9), a guide rod (10), and a first tension spring (11); the bottom end of the first rocker arm (9) is hinged to the support plate (3) by a pin; a groove extending along its length is provided on the first rocker arm (9); the guide rod (10) is installed on the support rod (7), and its axis is perpendicular to the axis of the support rod (7); one end of the guide rod (10) passes through the groove on the first rocker arm (9) and is connected to a limit block, and the outer wall of the guide rod (10) slides in contact with the groove; the first tension spring (11) is installed inside the telescopic rod (1), its bottom end is fixed to the inner wall of the telescopic rod (1), and its top end is fixed to the bottom end of the support rod (7).

3. The shaping and pruning device for bayberry cultivation according to claim 1, characterized in that, The drive assembly (5) includes a connecting rod (12), a second swing rod (13), and a second tension spring (14); the middle part of the second swing rod (13) is hinged to the support rod (7) by a pin, and a cutting mechanism (8) is installed at the top; the bottom end of the connecting rod (12) is hinged to the support plate (3) by a pin, and the top end is hinged to the bottom end of the second swing rod (13) by a pin; the second tension spring (14) is sleeved on the support rod (7), its bottom end abuts against the support plate (3), and its top end abuts against the limiting block on the support rod (7).

4. The shaping and pruning device for bayberry cultivation according to claim 2 or 3, characterized in that, The cutting mechanism (8) includes a motor (4), a cutting blade (15), and a protective shell (16); the motor (4) is mounted on the top of the drive assembly (5) and electrically connected to the battery (2) via a power cable, and the cutting blade (15) is mounted on the end of its output shaft; the protective shell (16) is mounted on the top of the drive assembly (5) and located outside the cutting blade (15), forming a semi-enclosed structure.

5. The shaping and pruning device for bayberry cultivation according to claim 4, characterized in that, The cutting blade (15) is a high-speed rotating circular saw blade; the edge of the circular saw blade has multiple cutting teeth evenly distributed.

6. The shaping and pruning device for bayberry cultivation according to claim 4, characterized in that, The protective shell (16) is made of high-strength, impact-resistant engineering plastic; the internal space of the protective shell (16) and the cutting blade (15) maintain a gap during high-speed rotation.

7. The shaping and pruning device for bayberry cultivation according to claim 1, characterized in that, The telescopic rod (1) is a multi-stage sleeve structure, composed of multiple high-strength lightweight aluminum alloy pipe sections nested concentrically; the pipe sections are mechanically locked together by built-in ball buckles or spiral locking mechanisms.

8. The pruning and shaping device for bayberry cultivation according to claim 1, characterized in that, The support plate (3) has two parallel support lugs on its side, and each lug has a pin hole.

9. The pruning and shaping device for bayberry cultivation according to claim 1, characterized in that, The hook (6) has a smooth arc-shaped inner wall in its U-shaped structure; the rubber pad is made of highly elastic and aging-resistant EPDM rubber material, and its surface is molded with anti-slip texture.

10. The pruning and shaping device for bayberry cultivation according to claim 1, characterized in that, Two anti-slip handles (17) are fitted on the telescopic rod (1) near the bottom, located at two different heights in the lower part of the telescopic rod (1). The anti-slip handles (17) are integrally molded from wear-resistant and anti-slip rubber or silicone material, and their surfaces are molded with anti-slip textures or raised particles.

Images