Girdling device for oranges and tangerines

By designing a girdling device for citrus and using mechanical drive to control the cutting depth, the problems of complex operation and high labor intensity in existing technologies have been solved, achieving efficient and precise girdling results, which are suitable for large-scale citrus planting.

CN224084193UActive Publication Date: 2026-04-07杨武
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-13
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

In existing technologies, citrus girdling tools are complex to operate, require a high level of technical expertise, are labor-intensive, and are difficult to meet the needs of large-scale planting. Furthermore, the cutting depth is difficult to control and can easily damage trees.

Method used

A girdling device comprising a clamping assembly, an arc-shaped track, and a girdling assembly was designed. The cutting depth is controlled by mechanical drive. The device is fixed to the tree trunk by the clamping assembly, and the arc-shaped track enables full-circumference cutting. The energy control chamber provides kinetic energy, and the drive device drives the roller cutter to perform girdling.

Benefits of technology

It effectively controls the cutting depth, improves work efficiency, reduces labor intensity, meets the needs of large-scale citrus planting, and avoids the adverse effects of cutting too deep or too shallow.

✦ Generated by Eureka AI based on patent content.

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Abstract

According to the girdling device for the citrus, the girdling depth can be effectively controlled, girdling is achieved through mechanical driving, the working efficiency is effectively improved, the labor intensity is reduced, and the requirement for large-scale citrus planting is met. The girdling device comprises a mounting plate, a clamping assembly is arranged on the mounting plate, an arc-shaped rail is connected to the mounting plate through a connecting rod, and a girdling assembly is arranged on the arc-shaped rail; an energy control bin is arranged below the mounting plate, controls the girdling assembly and provides kinetic energy for the girdling assembly; the whole device is clamped and fixed to a citrus tree trunk through the arranged clamping assembly, and the girdling assembly is controlled and started to rotate by an angle larger than 180 degrees along the arc-shaped track through the arranged energy control bin, so that complete girdling can be achieved; the cutting depth can be kept unchanged through the girdling assembly, and adverse effects caused by too large or too small girdling depth during cutting are effectively avoided.
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Description

Technical Field

[0001] This utility model relates to the field of citrus planting technology, specifically to a girdling device for citrus. Background Technology

[0002] Girdling involves cutting the phloem of the main trunk or branches of a fruit tree. This temporarily reduces the transport of organic nutrients (carbohydrates) to the roots, inhibiting root growth and reducing nutrient and water absorption. Consequently, the emergence of summer shoots is delayed or reduced. Girdling also temporarily diverts organic nutrients from the upper part of the tree, concentrating them on the growth and expansion of young fruit. Rapid fruit expansion inhibits or reduces summer shoot emergence. In citrus cultivation, girdling is an important technique. By girdling the trunk or branches, the phloem is temporarily severed, preventing the downward transport of photosynthetic products, thereby increasing the nutrient level of the branches above the girdled area, promoting flower bud differentiation, and improving fruit set. Currently, most girdling of citrus trees uses ordinary girdling tools, requiring operators to have a high level of skill and experience to accurately control the depth of the girdling. If the girdling is too deep, it can easily damage the xylem, affecting the normal growth of the fruit tree and even causing its death; if the girdling is too shallow, the desired girdling effect cannot be achieved. In addition, girdling using ordinary tools is a manual operation, which is inefficient and labor-intensive, making it difficult to meet the needs of large-scale citrus cultivation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a girdling device for citrus, which can effectively control the depth of girdling and achieve girdling by means of mechanical drive, effectively improving work efficiency, reducing labor intensity, and meeting the needs of large-scale citrus planting.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a girdling device for citrus includes a mounting plate, and the mounting plate is provided with a clamping component for fixing the girdling device to the trunk of the citrus tree.

[0005] The mounting plate is connected to an arc-shaped track via a connecting rod, and the arc of the arc-shaped track is greater than 180 degrees.

[0006] The arc-shaped track is equipped with a girdling component for girdling the trunk of citrus trees.

[0007] An energy control compartment is located below the mounting plate, which controls the ring-cutting assembly and provides it with kinetic energy.

[0008] Furthermore, the clamping assembly includes two symmetrically arranged arc-shaped clamping plates;

[0009] The two arc-shaped clamps are movably connected at one end near the mounting plate. Each of the two arc-shaped clamps is provided with an operating lever at one end near the mounting plate, and the two operating levers are arranged in a figure-eight shape. The two operating levers are mounted on the mounting plate through a sliding structure.

[0010] A reset structure is provided between the two operating levers, and in the initial state, the two arc-shaped clamps are close to each other.

[0011] Furthermore, the sliding structure includes an arc-shaped groove disposed on the upper surface of the mounting plate near the front section;

[0012] The arc-shaped slide has two matching sliders on both sides, and the two sliders are fixedly connected to the two operating rods respectively.

[0013] Furthermore, the circumferential cutting assembly includes a driving device, which is mounted on an arc-shaped track via the driving assembly;

[0014] A first drive link is movably connected to the lower part of the drive device, and a second drive link is movably connected to the end of the first drive link away from the drive device.

[0015] A fixed tool holder and a movable tool holder are provided above the end of the second drive link away from the first drive link. One end of the fixed tool holder is fixedly connected to one end of the second drive link, and one end of the movable tool holder is movably connected to one end of the second drive link.

[0016] Both the fixed and movable tool holders have through-cutting grooves on their sides, and both the fixed and movable tool holders have multiple mounting holes evenly distributed along their length on their upper surfaces.

[0017] The groove is provided with a roller cutter and corresponds to one of the mounting holes. The mounting hole is provided with a bolt for fixing the roller cutter.

[0018] A tensioning structure is provided between the fixed tool holder and the movable tool holder;

[0019] Both the fixed tool holder and the movable tool holder are provided with arc-shaped protective shells on their outer sides, and the protective shell on the fixed tool holder is in contact with the first drive linkage.

[0020] Furthermore, the tensioning structure includes a tensioning motor mounted on the protective shell sidewall of the movable tool holder;

[0021] A pull rope is provided on the output shaft of the tensioning motor, and the other end of the pull rope is fixedly mounted on the fixed tool holder;

[0022] A compression spring is provided between the fixed tool holder and the movable tool holder, and is located in front of the tool groove.

[0023] Furthermore, the drive assembly includes an arc-shaped groove disposed on the inner sidewall of the arc-shaped track, and an arc-shaped rack is disposed on the lower sidewall of the arc-shaped groove;

[0024] The output shaft of the drive device is equipped with a drive gear that meshes with an arc-shaped rack.

[0025] Rollers are installed on the upper, outer, and lower side walls of the arc-shaped track, and the three rollers are directly or indirectly connected to the drive device through a rotating shaft.

[0026] Furthermore, the energy control compartment includes a compartment body, and a storage battery and a control system are installed inside the compartment body.

[0027] Furthermore, the arc of the arc track is 190 degrees.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. The entire device is clamped and fixed to the citrus tree trunk by the clamping components. The ring-cutting components are rotated more than 180 degrees along the arc track by the energy control chamber to achieve complete ring cutting, which effectively improves work efficiency, reduces labor intensity and meets the needs of large-scale citrus planting.

[0030] 2. The girdling component can maintain a constant cutting depth, effectively avoiding the adverse effects caused by excessively deep or shallow girdling depths during cutting. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the girdling device for citrus described in this utility model;

[0032] Figure 2 This is a schematic diagram of the combined structure of the mounting plate, sliding structure, and clamping assembly described in this utility model;

[0033] Figure 3 This is a schematic diagram of the combined structure of the arc track, the ring-cut component, and the tensioning structure described in this utility model;

[0034] Figure 4 This is a schematic diagram of the fixed cutter holder, movable cutter holder, roller cutter, and bolt combination structure described in this utility model;

[0035] Figure 5 This is a schematic diagram of the combined structure of the arc track, driving device, and driving components described in this utility model;

[0036] The markings in the diagram are as follows: Mounting plate 1, Arc-shaped track 2, Connecting rod 3, Horizontal rod 301, Vertical rod 302, Energy control compartment 4, Clamping assembly 5, Arc-shaped clamping plate 501, Operating lever 502, Reset structure 503, Sliding structure 6, Arc-shaped groove 601, Slider 602, Ring cutting assembly 7, Drive device 701, First drive link 702, Second drive link 703, Fixed blade holder 704, Movable blade holder 705, Blade groove 706, Mounting hole 707, Roller cutter 708, Bolt 709, Protective shell 710, Tensioning structure 8, Wire tensioning motor 801, Pull rope 802, Compression spring 803, Drive assembly 9, Arc-shaped groove 901, Arc-shaped rack 902, Drive gear 903, Roller 904, Universal ball bearing 905, Control switch 10. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that all directional indicator terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" in the embodiments of this application 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 component 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. They are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0041] like Figure 1 As shown, a girdling device for citrus includes a mounting plate 1, on which a clamping assembly 5 for fixing the girdling device to the trunk of a citrus tree is provided;

[0042] The mounting plate 1 is connected to an arc-shaped track 2 via connecting rods 3, and the arc of the arc-shaped track 2 is greater than 180 degrees. It should be noted that there are two connecting rods 3 arranged symmetrically on the left and right. The connecting rods 3 are L-shaped, that is, the connecting rods 3 include a horizontal rod 301 and a vertical rod 302. One end of the horizontal rod 301 is fixedly set at the corner of the mounting plate 1, and the other end of the horizontal rod 301 is fixedly connected to the lower end of the vertical rod 302 and the two are perpendicular to each other. The upper end of the vertical rod 302 is fixedly connected to the end of the arc-shaped track 2. The two connecting rods 3 can not only support the arc-shaped track 2, but also limit the ring-cutting component 7 set on the arc-shaped track 2 to prevent it from falling off the arc-shaped track 2. The purpose of the arc being greater than 180 degrees is to ensure that a complete ring cut is achieved.

[0043] The arc-shaped track 2 is equipped with a girdling component 7 for girdling the trunk of citrus trees. The depth of the girdling component 7 can remain constant, effectively avoiding situations where the girdling depth is too deep or too shallow due to human subjectivity.

[0044] An energy control chamber 4 is provided below the mounting plate 1. The energy control chamber 4 controls the ring-cutting component 7 and provides it with kinetic energy. By controlling the ring-cutting component 7 to rotate more than 180 degrees along the arc track 2, ring cutting can be achieved without manually rotating it 360 degrees. This effectively improves work efficiency, reduces labor intensity, and meets the needs of large-scale citrus planting.

[0045] like Figure 1 , Figure 2 As shown, in this embodiment, preferably, the clamping assembly 5 includes two symmetrically arranged arc-shaped clamping plates 501;

[0046] The two arc-shaped clamps 501 are movably connected at one end near the mounting plate 1. Each of the two arc-shaped clamps 501 is provided with an operating rod 502 at one end near the mounting plate 1, and the two operating rods 502 are arranged in a figure-eight shape. The two operating rods 502 are mounted on the mounting plate 1 through a sliding structure 6.

[0047] A reset structure 503 is provided between the two operating rods 502. The reset structure 503 is preferably a torsion spring. The specifications and torque of the torsion spring are selected according to actual needs. In the initial state, the two arc-shaped clamps 501 are close to each other, and the principle is the same as that of the shark clamp in the prior art. When in use, hold the two operating rods 502 with your hands and squeeze them to bring them closer together. This will allow the rear ends of the two arc-shaped clamps 501 to move away and open. Then, place the citrus tree trunk between the two arc-shaped clamps 501 and release the two operating rods 502. The reset structure 503 will make the two operating rods 502 move away until the two arc-shaped clamps 501 clamp the citrus tree trunk, thus fixing the entire girdling device to the citrus tree trunk.

[0048] like Figure 1 , Figure 2 As shown, in this embodiment, preferably, the sliding structure 6 includes an arc-shaped sliding groove 601 disposed on the upper surface of the mounting plate 1 near the front section;

[0049] Two sliders 602 are provided on both sides of the arc-shaped slide groove 601. It should be noted that the sliders 602 slide freely within the arc-shaped slide groove 601 but will not detach from the arc-shaped slide groove 601. This technology is a conventional technology and will not be described in detail here. The two sliders 602 are fixedly connected to the two operating rods 502 respectively. Through the cooperation between the sliders 602 and the arc-shaped slide groove 601, the fixation and relative movement of the two operating rods 502 can be realized.

[0050] like Figure 1 , Figure 3-5 As shown, in this embodiment, preferably, the circumferential cutting component 7 includes a driving device 701, which is generally a low-voltage electric motor that can rotate in both directions. The driving device 701 is set on the arc-shaped track 2 through the driving component 9. It should be noted that there is a gap between the driving device 701 and the arc-shaped track 2 to ensure that it moves normally and avoids interference. In the initial state, the driving device 701 is located at the leftmost end of the arc-shaped track 2.

[0051] The first drive link 702 is movably connected to the lower part of the drive device 701. The movable connection is generally made by means of a rotating shaft. The end of the first drive link 702 away from the drive device 701 is movably connected to the second drive link 703. The movable connection is generally made by means of a rotating shaft.

[0052] A fixed tool holder 704 and a movable tool holder 705 are provided above the end of the second drive link 703 away from the first drive link 702. One end of the fixed tool holder 704 is fixedly connected to one end of the second drive link 703, that is, the fixed tool holder 704 and the second drive link 703 will not rotate relative to each other. One end of the movable tool holder 705 is movably connected to one end of the second drive link 703. The movable connection is generally made by means of a rotating shaft.

[0053] Both the fixed blade holder 704 and the movable blade holder 705 have blade grooves 706 extending through their sides, meaning that the blade grooves 706 completely penetrate the corresponding blade holders in the left and right directions. Both the fixed blade holder 704 and the movable blade holder 705 have multiple mounting holes 707 evenly distributed along their length. Each mounting hole 707 is interconnected with the corresponding blade groove 706. The multiple mounting holes 707 are used to adjust the position of the roller cutter 708, thereby adapting to citrus tree trunks of different diameters.

[0054] The groove 706 is provided with a roller cutter 708 and corresponds to one of the mounting holes 707. The mounting hole 707 is provided with a bolt 709 for fixing the roller cutter 708. Generally, a plug bolt 709 is used. The roller cutter 708 can rotate around the plug bolt 709, which effectively reduces the resistance during circumferential cutting.

[0055] A tensioning structure 8 is provided between the fixed blade holder 704 and the movable blade holder 705. The tensioning structure 8 is used to make the fixed blade holder 704 and the movable blade holder 705 relatively close or far apart, so that the two roller cutters 708 can be inserted into the citrus tree trunk to a suitable depth and the depth can remain unchanged.

[0056] Both the fixed cutter holder 704 and the movable cutter holder 705 are provided with arc-shaped protective shells 710 on their outer sides. A portion of the roller cutter 708 is located within the corresponding protective shell 710, preventing cuts from the outer portion of the roller cutter 708. The protective shell 710 on the fixed cutter holder 704 contacts the first drive connecting rod 702. The protective shell 710 effectively protects against cuts and also allows the first drive connecting rod 702 to contact the protective shell 710 during rotation, causing the first drive connecting rod 702 to abut against the protective shell 710 on the fixed cutter holder 704. Applying a force to make it rotate avoids the method of relying solely on the first drive linkage 702 to drive the second drive linkage 703 to rotate, causing the fixed blade holder 704 and the movable blade holder 705 to rotate, thereby driving the two roller cutters 708 to cut the citrus tree trunk. Since the two roller cutters 708 are symmetrically arranged, a complete ring cut can be achieved when the rotation angle is greater than 180 degrees, that is, the drive device 701 moves from the leftmost end of the arc track 2 to the rightmost end of the arc track 2. After the cutting is completed, the control system controls the drive device 701 to return to the initial position, that is, it can be achieved by controlling the motor to rotate forward and reverse.

[0057] like Figure 1 , Figure 3 As shown, in this embodiment, preferably, the tensioning structure 8 includes a tensioning motor 801 mounted on the side wall of the protective shell 710 of the movable tool holder 705. The tensioning motor 801 is a forward and reverse weak point motor. An electromagnetic brake valve is mounted on the tensioning motor 801 to realize the holding brake function. The electromagnetic brake valve can provide additional resistance after the motor is de-energized. The electromagnetic brake valve usually adopts the "power-off braking" design. When the motor is energized, the electromagnet coil generates magnetic force to overcome the spring pressure and separate the brake pad from the brake disc, allowing the motor to run freely. After the power is de-energized, the magnetic force disappears, the spring pushes the brake pad to press the brake disc, and the braking force is generated by friction to quickly stop the motor.

[0058] A pull rope 802 is provided on the output shaft of the tensioning motor 801. The other end of the pull rope 802 is fixedly mounted on the fixed blade holder 704. Due to the presence of the electromagnetic brake valve, the motor is prevented from rotating, thus avoiding the spring force of the compression spring 803 from causing the tensioning motor 801 to rotate, which would prevent the two roller cutters 708 from maintaining a fixed depth.

[0059] A compression spring 803 is provided between the fixed blade holder 704 and the movable blade holder 705 and is located in front of the blade groove 706. In use, the output shaft of the tensioning motor 801 is rotated, and the pull rope 802 is wound around the output shaft of the tensioning motor 801. During this process, the pull rope 802 becomes shorter and shorter, which can drive the movable blade holder 705 to approach the fixed blade holder 704, so that the two roller cutters 708 on the fixed blade holder 704 and the movable blade holder 705 approach each other and penetrate into the citrus tree trunk to a suitable depth. The drive device 701 is started to drive the two roller cutters 708 to rotate at a certain angle to achieve circumferential cutting of the citrus tree trunk. After the cutting is completed, the tensioning motor 801 is started to reverse and the pull rope is lengthened. During the process of the compression spring 803 restoring its deformation, the fixed blade holder 704 and the movable blade holder 705 can return to their initial state.

[0060] like Figure 5 As shown, in this embodiment, preferably, the drive component 9 includes an arc-shaped groove 901 disposed on the inner sidewall of the arc-shaped track 2, and an arc-shaped rack 902 adapted thereto is disposed on the lower sidewall of the arc-shaped groove 901.

[0061] The output shaft of the drive device 701 is provided with a drive gear 903 that meshes with the arc-shaped rack 902.

[0062] Rollers 904 are provided on the upper, outer, and lower side walls of the arc-shaped track 2. The three rollers 904 are directly or indirectly connected to the housing of the drive device 701 through rotating shafts. The drive device 701 can be fixed on the arc-shaped track 2 by the three rollers 904 and the corresponding rotating shafts, ensuring that it can move back and forth along the arc-shaped track 2. In addition, a universal ball bearing 905 is provided at the end of the output shaft of the drive device 701. The universal ball bearing 905 slides in contact with the bottom of the arc-shaped groove 901. Through the limiting in four directions, the drive device 701 is more stable. In use, the drive device 701 drives the drive gear 903 to rotate. Since the drive gear 903 meshes with the arc-shaped rack 902, the drive device 701 can move along the arc-shaped track 2. In addition, the meshing of the gear and rack ensures that the drive device 701 moves stably and at a uniform speed, and there will be no slippage or inability to move even when there is resistance.

[0063] like Figure 1 , Figure 2As shown, in this embodiment, preferably, the energy control compartment 4 includes a compartment body, which houses a battery and a control system. The battery provides power to all electrical equipment to enable them to operate normally. Specifically, the drive device 701, the tensioning motor 801, the control system, and the electromagnetic brake valve are electrically connected to the battery. The control system controls the drive device 701 and the tensioning motor 801, meaning that the drive device 701 and the tensioning motor 801 are respectively connected to the control system via signals. The control system typically uses a high-performance, low-power microcontroller from the STM32 series. In addition, two control switches 10 are integrated on the two operating levers 502, respectively. The two control switches 10 are respectively connected to the control system via signals and are used to control the drive device 701 and the tensioning motor 801.

[0064] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A girdling device for citrus fruits, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a clamping assembly (5) for fixing the girdling device to the trunk of the citrus tree; The mounting plate (1) is connected to an arc-shaped track (2) by a connecting rod (3), and the arc of the arc-shaped track (2) is greater than 180 degrees; The arc-shaped track (2) is equipped with a girdling component (7) for girdling the trunk of citrus trees; An energy control chamber (4) is provided below the mounting plate (1), which controls the ring cutting assembly (7) and provides it with kinetic energy.

2. The girdling device for citrus fruits according to claim 1, characterized in that: The clamping assembly (5) includes two symmetrically arranged arc-shaped clamping plates (501); The two arc-shaped clamps (501) are movably connected at one end near the mounting plate (1). Each of the two arc-shaped clamps (501) is provided with an operating rod (502) at one end near the mounting plate (1), and the two operating rods (502) are arranged in a figure-eight shape. The two operating rods (502) are set on the mounting plate (1) through a sliding structure (6). A reset structure (503) is provided between the two operating levers (502). In the initial state, the two arc-shaped clamps (501) are close to each other.

3. A girdling device for citrus fruits according to claim 2, characterized in that: The sliding structure (6) includes an arc-shaped groove (601) disposed on the upper surface of the mounting plate (1) near the front section; The arc-shaped slide (601) has two matching sliders (602) on both sides, and the two sliders (602) are fixedly connected to the two operating rods (502) respectively.

4. A girdling device for citrus fruits according to claim 1, characterized in that: The ring-cutting assembly (7) includes a driving device (701), which is mounted on the arc-shaped track (2) via a driving assembly (9); A first drive link (702) is movably connected to the lower part of the drive device (701), and a second drive link (703) is movably connected to the end of the first drive link (702) away from the drive device (701). A fixed tool holder (704) and a movable tool holder (705) are provided above the end of the second drive link (703) away from the first drive link (702). One end of the fixed tool holder (704) is fixedly connected to one end of the second drive link (703), and one end of the movable tool holder (705) is movably connected to one end of the second drive link (703). Both the fixed tool holder (704) and the movable tool holder (705) have through-cutting grooves (706) on their sides, and both the fixed tool holder (704) and the movable tool holder (705) have multiple mounting holes (707) on their upper surfaces, which are evenly distributed along their length. A roller cutter (708) is provided in the cutter groove (706) and corresponds to one of the mounting holes (707). A bolt (709) for fixing the roller cutter (708) is provided in the mounting hole (707). A tensioning structure (8) is provided between the fixed tool holder (704) and the movable tool holder (705); Both the fixed tool holder (704) and the movable tool holder (705) are provided with arc-shaped protective shells (710) on their outer sides. The protective shell (710) on the fixed tool holder (704) is in contact with the first drive linkage (702).

5. A girdling device for citrus fruits according to claim 4, characterized in that: The tensioning structure (8) includes a tensioning motor (801) mounted on the side wall of the protective shell (710) of the movable tool holder (705); A pull rope (802) is provided on the output shaft of the tensioning motor (801), and the other end of the pull rope (802) is fixedly mounted on the fixed tool holder (704); A compression spring (803) is provided between the fixed tool holder (704) and the movable tool holder (705) and is located in front of the tool groove (706).

6. A girdling device for citrus fruits according to claim 4, characterized in that: The drive assembly (9) includes an arc-shaped groove (901) disposed on the inner side wall of the arc-shaped track (2), and an arc-shaped rack (902) is disposed on the lower side wall of the arc-shaped groove (901); The output shaft of the drive device (701) is provided with a drive gear (903) that meshes with the arc-shaped rack (902); Rollers (904) are provided on the upper side wall, outer side wall and lower side wall of the arc track (2), and the three rollers (904) are directly or indirectly connected to the drive device (701) through the rotating shaft.

7. A girdling device for citrus fruits according to claim 1, characterized in that: The energy control compartment (4) includes a compartment body, and a storage battery and a control system are installed inside the compartment body.

8. A girdling device for citrus fruits according to claim 1, characterized in that: The arc of the arc track (2) is 190 degrees.