Annular branch cutting device for tree grafting

Abstract

The invention discloses an annular branch cutting device for forest grafting, which comprises four arc-shaped plates, a stored intelligent annular surface cutter and an axial cutter can be pushed out, the intelligent annular surface cutter can cut off the outer skin of a branch and can control the cutting pressure, the axial cutter can cut off the outer skin in the length direction, and the intelligent annular surface cutter can cut off the outer skin in the length direction. The arc-shaped plate is rotated clockwise to a proper angle, so that the axial cutter is deflected, then the arc-shaped plate is rotated anticlockwise, and the deflected axial cutter can peel off the outer skin of the cut branch from the branch when rotating along with the arc-shaped plate. Through the pressure sensing control of the intelligent ring surface cutter and the linkage design of the transmission mechanism, the problems of uneven notches, potential safety hazards and branch damage caused by manual ring cutting are effectively solved, the pressure sensor monitors the cutting pressure in real time, the situation that branches are damaged due to excessive cutting is avoided, and the working efficiency is improved. Meanwhile, accurate positioning and self-adaptive adjustment of the cutting tool are achieved through the transmission mechanism, it is ensured that the annular cutting depth is consistent, the outer skin is completely stripped, and the grafting survival rate and operation safety are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tree grafting circumcision, and particularly to a circular cutting device for tree grafting branches. Background Art

[0002] In the tree grafting and seedling raising industry, the outer skin circumcision and peeling technology is the core link for forming an efficient fitting interface between the rootstock and the scion, and its operation accuracy directly affects the grafting survival rate and the growth trend of the plants.

[0003] In the current tree grafting operation, the traditional technology for circumcision treatment of the outer skin of branches still highly relies on manual operation. The specific process is as follows: The operator holds a blade and makes two circular cuts along the surface of the branch to form a circular incision band. Subsequently, the outer skin of this section is peeled off through longitudinal cutting, and the peeled outer skin is used as a reference for grafting size to determine the length of the cut for the outer skin of the subsequent branches to be grafted. However, this process has significant technical defects: It is difficult for manual operation to ensure the consistency of the circumcision depth and width, and the uneven incision directly affects the grafting fitting degree and survival rate; during the operation process, the blade is prone to slide due to unstable force application or fatigue of holding, resulting in accidental cutting of the operator's fingers, with relatively high safety hazards; at the same time, it is difficult for the manual operation blade to control the force, resulting in damage to the branches and affecting the survival rate of grafting.

[0004] Therefore, this application proposes a circular cutting device for tree grafting branches. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems, and a circular cutting device for tree grafting branches is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A circular cutting device for tree grafting branches includes four arc-shaped plates. The four arc-shaped plates are rectangular and distributed vertically. A receiving groove is provided on the concave surface of the arc-shaped plate, and a smart annular cutter to be received is movably connected in the receiving groove. Axial cutters to be received are fixed on two smart annular cutters that are opposite up and down.

[0008] Both ends of the arc-shaped plate are respectively fixed with a first connecting block and a second connecting block. Two first connecting blocks at the same height are movably connected, and two second connecting blocks at the same height can be movably connected and are the tightening ends.

[0009] Put four arc-shaped plates on the outside of the branch. When the two second connecting blocks are tightened, relative movement occurs between the arc-shaped plates and the branch, causing the branch to be located in the middle of the arc-shaped plates. At the same time, the stored intelligent toroidal cutter and axial cutter can be pushed out. The intelligent toroidal cutter can cut the outer skin of the branch and control the cutting pressure, and the axial cutter can cut in the length direction of the outer skin. Rotate the arc-shaped plate clockwise to an appropriate angle to deflect the axial cutter, and then rotate counterclockwise. When the deflected axial cutter follows the rotation of the arc-shaped plate, it can peel the cut branch outer skin from the branch.

[0010] Preferably, the two first connecting blocks opposite to each other up and down and the two second connecting blocks arranged opposite to each other up and down are all connected by a connecting plate.

[0011] Preferably, a tension spring is fixed on the first connecting block, and the other end of the tension spring is fixedly connected to the first connecting block on the other side.

[0012] Preferably, a card slot is provided through the end of the second connecting block. Connecting rods are rotatably connected in the two card slots distributed up and down on the same side. A driving plate is fixed at the ends of the two connecting rods. An electric push rod is installed on the connecting plate located at the position of the second connecting block and far from the connecting rod. A push rod is installed on the electric push rod. A groove is provided on the driving plate for cooperating with the push rod. When the connecting rod rotates into the card slot, the push rod is opposite to the groove. The electric push rod drives the push rod to extend into the groove and drives the driving plate to move, enabling the arc-shaped plate to be tightened.

[0013] Preferably, the intelligent toroidal cutter includes an arc-shaped block fixed in the storage groove. A pressure sensor is fixed on the arc-shaped block. The pressure sensor can be connected to the electric push rod. An arc-shaped cutter is fixed on the pressure sensor. A plurality of first return springs for resetting the intelligent toroidal cutter are fixed between the arc-shaped block and the storage groove.

[0014] Preferably, first through grooves communicating with the storage groove are provided through the opposite surfaces of the two arc-shaped plates arranged opposite to each other up and down. A round rod is fixedly connected to the two arc-shaped blocks. A handle is sleeved outside the round rod. A torsion spring is installed between the handle and the round rod. The axial cutter is fixed on the handle.

[0015] Preferably, it further includes a transmission mechanism for driving the intelligent toroidal cutter to move. The transmission mechanism includes a fixed box fixed on the arc-shaped plate. A wedge block is slidably abutted against the inner wall of the fixed box. A second return spring is fixed on the wedge block, and the second return spring is fixedly connected to the fixed box. A second through groove communicating with the storage groove is provided through the arc-shaped plate. A guide block fixedly connected to the arc-shaped block is slidably connected in the second through groove. An arc-shaped push block slidable on the arc-shaped plate is fixed on the guide block. The arc-shaped push block is abutted against the wedge block. A pull rope is fixed on the wedge block, and a positioning block is fixed on the adjacent arc-shaped plate. The pull rope is fixedly connected to the positioning block.

[0016] Preferably, a guide wheel is rotatably installed on the arc-shaped plate, and the pull rope is arranged around the outside of the guide wheel.

[0017] Preferably, a control box is installed on one of the fixed boxes, and the control box is connected to the pressure sensor and the electric push rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The intelligent toroidal cutter integrates a pressure sensor. By real-time monitoring of the cutting pressure change (pressure differences in the three stages of outer skin contact - cutting - branch contact), the cutting depth is precisely controlled to avoid excessive penetration into the xylem or outer skin residue, ensuring the flatness and depth consistency of the incision, and significantly improving the grafting fit and survival rate.

[0020] 2. The relative movement between the arc-shaped plate and the branch and the linkage design of the transmission mechanism enable the device to automatically center on the axis of the branch. Combined with the circumferential cutting trajectory of the arc-shaped cutter, it eliminates the cutting deviation and trajectory distortion caused by manual operation, and ensures the integrity of the outer skin peeling.

[0021] 3. The electric push rod drives the arc-shaped plate to tighten, replacing manual force application on the blade, eliminating the risk of cuts caused by blade sliding; the pressure sensing system real-time feedbacks the cutting state, avoiding sudden injuries caused by overloading of manual force application, and the accident rate of the operation approaches zero.

[0022] 4. The axial cutter is stored in the U-shaped strip in the non-working state, and the intelligent toroidal cutter is hidden in the storage groove under normal conditions and is only automatically pushed out during cutting, completely avoiding the risk of accidental touch in the non-working state. The protection of the branch is intelligent.

[0023] 5. The pressure sensor is linked with the controller to set a safety threshold for the cutting pressure. When the arc-shaped cutter touches the branch, it automatically stops advancing to avoid branch damage; at the same time, the axial cutter adapts to the curvature of the branch through the torsion spring, reducing the cutting resistance and reducing the mechanical compression on the branch tissue.

[0024] 6. The arc cutter and the axial cutter are designed to be linked. After the arc cutter completes the circumferential cutting, the axial cutter cuts into and peels off the outer skin at the minimum angle, avoiding the cumulative damage to the branches caused by repeated single - cutter cutting.

[0025] 7. The device integrates the functions of circumferential cutting, longitudinal cutting, and peeling. By rotating the arc - shaped plate, the complete peeling of the outer skin can be achieved, eliminating the need for manual secondary comparison and cutting steps, and improving work efficiency.

[0026] 8. The telescopic design of the connecting plate is combined with the linkage of the transmission mechanism to adapt to branches of different diameters; the angle self - adaptation mechanism of the axial cutter is compatible with the circumferential cutting requirements of branches with different ovality, significantly improving the versatility in large - scale application scenarios.

[0027] 9. The device cuts synchronously through the central positioning of the arc - shaped plate and the axial cutter, directly obtaining the cutting size that matches the outer skin of the branch to be grafted, eliminating manual measurement errors, and ensuring the accuracy and consistency of the grafting wrap.

[0028] 10. During the cutting process, the pressure sensor corrects the cutting parameters in real - time to ensure a constant peeling size of the outer skin of branches with different hardnesses, avoiding size fluctuations caused by manual operation.

[0029] In summary, through the pressure - sensing control of the intelligent toroidal cutter and the linkage design of the transmission mechanism, the present invention effectively solves the problems of uneven cut, safety hazards, and branch damage caused by manual circumferential cutting. Its pressure sensor monitors the cutting pressure in real - time to avoid over - cutting damage to the branches. At the same time, the transmission mechanism realizes the precise positioning and adaptive adjustment of the cutting tool, ensuring a consistent circumferential cutting depth and complete peeling of the outer skin, significantly improving the grafting survival rate and operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. is a schematic structural diagram of a branch ring - cutting device for forest tree grafting proposed by the present invention;

[0031] Figure 2 FIG. is a schematic structural diagram of the opening of the connecting rod in a branch ring - cutting device for forest tree grafting proposed by the present invention;

[0032] Figure 3 FIG. is a top view of a branch ring - cutting device for forest tree grafting proposed by the present invention;

[0033] Figure 4 FIG. is a schematic structural diagram of the inside of the storage groove in a branch ring - cutting device for forest tree grafting proposed by the present invention;

[0034] Figure 5 FIG. is a rear view of a branch ring - cutting device for forest tree grafting proposed by the present invention;

[0035] Figure 6Schematic structural diagrams of the intelligent toroidal cutter and the axial cutter in a branch ring cutting device for tree grafting proposed by the present invention;

[0036] Figure 7 Schematic structural diagram of the intelligent toroidal cutter in a branch ring cutting device for tree grafting proposed by the present invention.

[0037] In the figure: 1 arc-shaped plate, 2 receiving groove, 3 first connection block, 4 tension spring, 5 second connection block, 6 connection plate, 7 connecting rod, 8 electric push rod, 9 driving plate, 10 push rod, 11 knife handle, 12 round rod, 13 axial cutter, 14 fixed box, 15 control box, 16 pull rope, 17 guide wheel, 18 positioning block, 19 arc-shaped push block, 20 wedge block, 21 second return spring, 22 second through groove, 23 first through groove, 24 intelligent toroidal cutter, 25 first return spring, 26 guide block, 27 groove, 28 card slot, 29 arc-shaped block, 30 arc-shaped cutter, 31 pressure sensor. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] Refer to Figures 1-7 , a branch ring cutting device for tree grafting, including four arc-shaped plates 1. The four arc-shaped plates 1 are rectangular and distributed up and down. A receiving groove 2 is provided on the concave surface of the arc-shaped plate 1. An intelligent toroidal cutter 24 to be received is movably connected in the receiving groove 2. An axial cutter 13 to be received is fixed on the two intelligent toroidal cutters 24 that are opposite up and down.

[0040] Further explanation of the intelligent toroidal cutter 24: The intelligent toroidal cutter 24 includes an arc-shaped block 29 fixed in the receiving groove 2. A plurality of first return springs 25 for the reset of the intelligent toroidal cutter 24 are fixed between the arc-shaped block 29 and the receiving groove 2. A pressure sensor 31 is fixed on the arc-shaped block 29. The pressure sensor 31 can be connected to the electric push rod 8. An arc-shaped cutter 30 is fixed on the pressure sensor 31. When the arc-shaped cutter 30 abuts against the outer skin of the branch, cuts off the outer skin of the branch, and abuts against the branch trunk, the pressures of the three are different. Therefore, by analyzing the pressure, it can be known whether the arc-shaped cutter 30 cuts off the outer skin of the branch, avoiding damage to the trunk caused by over-cutting, or poor cutting effect resulting in inability to peel off.

[0041] A control box 15 is installed on one of the fixed boxes 14. The control box 15 is connected to the pressure sensor 31 and the electric push rod 10. There is a power supply and a controller in the control box 15. The pressure sensor 31 transmits a signal to the controller, and the controller controls the electric push rod 10 to work. The power supply supplies power to the controller, the pressure sensor 31, and the electric push rod 10.

[0042] A first connecting block 3 and a second connecting block 5 are fixed to both ends of the arc plate 1, respectively. The two first connecting blocks 3 opposite to each other and the two second connecting blocks 5 opposite to each other are connected by a connecting plate 6, so that the two arc plates 1 opposite to each other can be stably connected together.

[0043] The two first connecting blocks 3 at the same height are movably connected, a tension spring 4 is fixed on the first connecting block 3, the other end of the tension spring 4 is fixedly connected to the first connecting block 3 on the other side, and the four arc-shaped plates 1 can be integrated with the above-mentioned connecting plate 6. The connecting plate 6 can also be a lockable telescopic plate, which has been adaptively adjusted according to different cutting length requirements.

[0044] The two second connecting blocks 5 at the same height can be movably connected and are tightening ends. A slot 28 is penetrated through the end of the second connecting block 5. The two slots 28 on the same side and distributed up and down are rotatably connected with connecting rods 7. A driving plate 9 is fixed to the ends of the two connecting rods 7. An electric push rod 8 is installed on the connecting plate 6 located at the position of the second connecting block 5 and away from the connecting rod 7. A pushing rod 10 is installed on the electric push rod 8. A groove 27 that cooperates with the pushing rod 10 is provided on the driving plate 9. When the connecting rod 7 rotates into the slot 28, the pushing rod 10 is opposite to the groove 27, and the electric push rod 8 drives the pushing rod 10 to extend into the groove 27 and drives the driving plate 9 to move, so that the arc plate 1 can be tightened.

[0045] The four arc plates 1 are put on the outside of the branches. When the two second connecting blocks 5 are tightened, the arc plates 1 and the branches move relative to each other, so that the branches are located in the middle of the arc plates 1. The transmission mechanism also includes a transmission mechanism for driving the intelligent annular cutter 24 to move. The transmission mechanism includes a fixed box 14 fixed on the arc plate 1. The inner wall of the fixed box 14 slides against a wedge block 20. A second return spring 21 is fixed on the wedge block 20. The second return spring 21 is fixedly connected to the fixed box 14. A second through groove 22 communicating with the receiving groove 2 is penetrated through the arc plate 1. A guide block 26 fixedly connected to the arc block 29 is slidably connected in the second through groove 22. An arc push block 19 sliding on the arc plate 1 is fixed on the guide block 26. The arc push block 19 is set against the wedge block 20.

[0046] A pull rope 16 is fixed on the wedge block 20, and a positioning block 18 is fixed on the adjacent arc plate 1. The pull rope 16 is fixedly connected to the positioning block 18, wherein a guide wheel 17 is rotatably mounted on the arc plate 1, and the pull rope 16 is arranged around the outside of the guide wheel 17 for guiding the pull rope 16.

[0047] It can push out the received intelligent toroidal cutter 24 and the axial cutter 13. The axial cutter 13 is arranged opposite to the concave middle part of the arc-shaped plate 1. First through grooves 23 communicating with the storage groove 2 are provided through the opposite surfaces of the two arc-shaped plates 1 arranged up and down relatively. Two arc-shaped blocks 29 are fixedly connected with a round rod 12. A handle 11 is sleeved outside the round rod 12. A torsion spring is installed between the handle 11 and the round rod 12. The axial cutter 13 is fixed on the handle 11, so that the axial cutter 13 can change its angle. Among them, a U-shaped strip can be fixed on the arc-shaped plate 1, and the axial cutter 13 is stored inside the U-shaped strip to avoid being accidentally touched by the axial cutter 13 when not in use and causing injury.

[0048] The intelligent toroidal cutter 24 can cut off the outer skin of the branch and can control the cutting pressure. The axial cutter 13 can cut off the outer skin in the length direction. Rotate the arc-shaped plate 1 clockwise to an appropriate angle to make the axial cutter 13 deflect, and then rotate counterclockwise. When the deflected axial cutter 13 follows the arc-shaped plate 1 to rotate, it can peel off the cut branch outer skin from the branch.

[0049] Before the invention is used, as Figure 2 shown in the figure, move the two connecting plates 6 at the second connecting block 5 away from each other, so that the four arc-shaped plates 1 are in an open state. Then buckle the arc-shaped plates 1 outside the branch. Next, rotate the driving plate 9 to drive the connecting rod 7 to rotate into the card slot 28. The push rod 10 is opposite to the groove 27. The electric push rod 8 drives the push rod 10 to slowly extend into the groove 27 and drives the driving plate 9 to slowly move. The movement of the driving plate 9 drives the two connecting rods 7 to move, so as to realize the relative movement of the two second connecting blocks 5 and realize tightening.

[0050] When the second connecting block 5 is tightened, it will cause the first connecting block 3 to move away from each other. At this time, the tension spring 4 is stretched. Since the outer part of the branch is cylindrical and located inside the four arc-shaped plates 1, relative movement occurs between the arc-shaped plates 1 and the branch, realizing the adaptive adjustment between the arc-shaped plates 1 and the branch, that is, the branch abuts against the middle parts of the four arc-shaped plates 1, that is, opposite to the axial cutter 13.

[0051] As described above, the whole device can be installed on the branch.

[0052] When the first connecting block 3 moves away from each other, it will drive the positioning block 18 and the pull rope 16 to move. The movement of the pull rope 16 drives the wedge block 20 to move. Under the guidance of the fixed box 14, the wedge block 20 moves horizontally and stably. The wedge block 20 will squeeze the arc push block 19 to move. The movement of the arc push block 19 drives the guide block 26 and the intelligent annular cutter 24 to move, so that the intelligent annular cutter 24 is partially moved out of the storage groove 2. The final state is that the arc cutter 30 is against the bark of the branch. At this time, the pressure sensor 31 monitors a certain pressure. When the arc cutter 30 cuts off the bark of the branch, the pressure monitored by the pressure sensor 31 at this time decreases instantly and then increases. The increase is because the arc cutter 30 is against the branch trunk. In this way, it can be known that the arc cutter 30 cuts off the bark of the branch.

[0053] The movement of the arc cutter 30 drives the round rod 12 , the handle 11 and the axial cutter 13 to move. At this time, the axial cutter 13 is perpendicular to the branch bark, so it will follow the arc cutter 30 to cut the branch bark.

[0054] The forestry personnel can manually rotate the connecting plate 6 or the driving plate 9, first rotate the arc plate 1 clockwise to a suitable angle, that is, rotate it slightly. Since the axial cutter 13 is perpendicular to the branch bark and the handle 11 can rotate, the branch bark limits the axial cutter 13 so that it cannot detach, which will cause the axial cutter 13 to deflect, and the axial cutter 13 cuts off the bark and abuts against the branch. When the axial cutter 13 deflects, the blade of the axial cutter 13 abuts against the branch and lifts the branch bark to separate it from the branch.

[0055] Then the whole device is rotated counterclockwise, the arc cutter 30 can make circular cuts on both ends of the branch skin, and the axial cutter 13 can cut the branch skin, thus completing the circular cutting of the branch.

[0056] The invention is used to circumcise branches to be grafted, remove the outer skin with buds, wrap it on the grafted branches, and then tie it up.

[0057] Since the two outer skins of the circumcision are cut by the same device, the lengths of the two are the same, thus avoiding the disadvantage of manual measurement and cutting in the prior art.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circular cutting device for tree grafting branches, comprising four arc-shaped plates (1), characterized in that, The four arc-shaped plates (1) are rectangular and distributed vertically. A storage groove (2) is provided on the concave surface of the arc-shaped plate (1). A smart toroidal cutter (24) to be stored is movably connected in the storage groove (2). Axial cutters (13) to be stored are fixed on two smart toroidal cutters (24) that are opposite to each other vertically. First connection blocks (3) and second connection blocks (5) are respectively fixed at both ends of the arc-shaped plate (1). Two first connection blocks (3) at the same height are movably connected. Two second connection blocks (5) at the same height can be movably connected and are the tightening ends. Put the four arc-shaped plates (1) outside the branch. When the two second connection blocks (5) are tightened, relative movement occurs between the arc-shaped plate (1) and the branch, making the branch located in the middle of the arc-shaped plate (1). At the same time, the smart toroidal cutter (24) and the axial cutter (13) to be stored can be pushed out. The smart toroidal cutter (24) can cut the outer skin of the branch and can control the cutting pressure. The axial cutter (13) can cut in the length direction of the outer skin. Rotate the arc-shaped plate (1) clockwise to an appropriate angle so that the axial cutter (13) deflects, and then rotate counterclockwise. When the deflected axial cutter (13) rotates with the arc-shaped plate (1), it can peel the cut branch outer skin from the branch.

2. The annular cutting device for tree branches used in forest tree grafting according to claim 1, wherein, Two first connection blocks (3) that are opposite to each other vertically and two second connection blocks (5) that are arranged opposite to each other vertically are both connected by a connecting plate (6).

3. A branch annular cutting device for forest tree grafting according to claim 1, characterized in that, A tension spring (4) is fixed on the first connection block (3), and the other end of the tension spring (4) is fixedly connected to the first connection block (3) on the other side.

4. A branch annular cutting device for forest tree grafting according to claim 1, wherein, A card slot (28) runs through the end of the second connection block (5). Connecting rods (7) are rotatably connected in two card slots (28) that are on the same side and distributed vertically. A driving plate (9) is fixed at the ends of the two connecting rods (7). An electric push rod (8) is installed on the connecting plate (6) at the position of the second connection block (5) and far from the connecting rod (7). A push rod (10) is installed on the electric push rod (8). A groove (27) is provided on the driving plate (9) for cooperating with the push rod (10). When the connecting rod (7) rotates into the card slot (28), the push rod (10) is opposite to the groove (27). The electric push rod (8) drives the push rod (10) to extend into the groove (27) and drives the driving plate (9) to move, enabling the arc-shaped plate (1) to be tightened.

5. The annular cutting device for tree grafting branches according to claim 4, characterized in that, The smart toroidal cutter (24) includes an arc-shaped block (29) fixed in the storage groove (2). A pressure sensor (31) is fixed on the arc-shaped block (29). The pressure sensor (31) can be connected to the electric push rod (8). An arc-shaped cutter (30) is fixed on the pressure sensor (31). A plurality of first return springs (25) for resetting the smart toroidal cutter (24) are fixed between the arc-shaped block (29) and the storage groove (2).

6. The annular cutting device for tree grafting branches according to claim 5, characterized in that, The opposite surfaces of the two arc-shaped plates (1) arranged relatively up and down are both provided with first through grooves (23) communicating with the storage groove (2). A round rod (12) is fixedly connected to the two arc-shaped blocks (29). A handle (11) is sleeved outside the round rod (12). A torsion spring is installed between the handle (11) and the round rod (12). The axial cutting knife (13) is fixed on the handle (11).

7. A branch circular cutting device for forest tree grafting according to claim 5, characterized in that, It further includes a transmission mechanism for driving the intelligent toroidal cutting knife (24) to move. The transmission mechanism includes a fixed box (14) fixed on the arc-shaped plate (1). A wedge-shaped block (20) is slidably abutted against the inner wall of the fixed box (14). A second return spring (21) is fixed on the wedge-shaped block (20). The second return spring (21) is fixedly connected to the fixed box (14). The arc-shaped plate (1) is provided with a second through groove (22) communicating with the storage groove (2). A guide block (26) fixedly connected to the arc-shaped block (29) is slidably connected in the second through groove (22). An arc-shaped push block (19) slidably arranged on the arc-shaped plate (1) is fixed on the guide block (26). The arc-shaped push block (19) is arranged to abut against the wedge-shaped block (20). A pull rope (16) is fixed on the wedge-shaped block (20). A positioning block (18) is fixed on the adjacent arc-shaped plate (1). The pull rope (16) is fixedly connected to the positioning block (18).

8. The annular cutting device for tree grafting branches according to claim 7, characterized in that, A guide wheel (17) is rotatably installed on the arc-shaped plate (1). The pull rope (16) is wound around the outside of the guide wheel (17).

9. The annular cutting device for tree grafting branches according to claim 7, characterized in that, A control box (15) is installed on one of the fixed boxes (14). The control box (15) is connected to a pressure sensor (31) and an electric push rod (8).

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