Portable auxiliary grafting tool for top grafting and seed changing of litchis

Abstract

The utility model relates to the technical field of auxiliary grafting tools, and discloses a portable litchi top grafting seed changing auxiliary grafting tool which comprises a knife handle, a knife sheath is arranged on the side wall of the knife handle, a clamping block is arranged on the outer wall of the knife sheath, a knife body is arranged on the side wall of the knife handle, a limiting assembly is arranged in the knife handle, and a quick release assembly is arranged in the knife handle. The limiting assembly comprises a hollow column, a limiting block and a first clamping ball, the outer wall of the hollow column is fixedly connected to the interior of the cutter handle, one side wall of the clamping ball is fixedly connected to the outer wall of the limiting block, and the outer wall of the limiting block is slidably connected to the interior of the hollow column. According to the grafting knife, the scabbard is inserted into the knife handle, the clamping block extrudes the first clamping ball and the limiting block and extrudes the telescopic rod and the first spring, locking of the scabbard is achieved, and the problems that due to the fact that a traditional grafting knife scabbard is not provided with a fixing structure, the scabbard is prone to loosening or falling in the carrying and high-altitude operation process, a cutting edge is exposed, and potential safety hazards exist are solved. And the use safety of the tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary grafting tools, and in particular to a portable auxiliary grafting tool for high grafting and variety change of litchi. Background Technology

[0002] Top grafting of litchi is an important technique in fruit tree cultivation. By grafting scions of superior varieties onto existing rootstocks, variety improvement, yield enhancement, and resistance strengthening can be achieved. During the grafting process, the portability, safety, and operational efficiency of the grafting knife directly affect the quality of the operation and the safety of personnel. Traditional grafting tools mostly adopt a fixed sheath and blade design, which can meet basic needs, but in scenarios such as high-altitude operations and mobile carrying, problems such as sheath detachment and blade exposure are prone to occur, posing safety hazards. In addition, the existing tools are inefficient in the blade disassembly and replacement process, making it difficult to meet the needs of large-scale, high-intensity grafting operations. Therefore, developing a special grafting tool for litchi top grafting that combines safety, portability, and efficient operation is of great significance for improving the grafting success rate and operational efficiency.

[0003] Currently, most grafting knives on the market adopt an integrated or split structure design. The sheath is usually connected to the handle by a simple sleeve or magnetic attraction, relying on friction or magnetism to maintain fixation. The blade is rigidly connected to the handle by screws or rivets, requiring external tools for disassembly. The mechanical principle of this type of structure is based on physical contact and fastener locking. Although it can achieve basic functions, it is not optimized for dynamic usage scenarios. For example, the sheath is fixed only by the tightness of the sleeve and lacks an active locking mechanism. The blade disassembly requires multiple screw tightening, which is cumbersome. Although these designs are low-cost, they cannot meet the needs of modern agriculture for efficient and safe tools.

[0004] Traditional grafting knife sheath fixing methods have significant drawbacks: due to the lack of an effective locking structure, the sheath is easily loosened or detached by external forces when carried or used at heights, resulting in accidental exposure of the blade. This problem not only causes cuts to operators or damage to the tool, but also delays the work progress due to the sheath falling off, especially when climbing ladders or moving the tool. In addition, the exposed blade after the sheath falls off will accelerate corrosion and shorten the tool's service life. Therefore, how to design a sheath structure that can automatically lock and prevent accidental detachment has become a key challenge to improve the safety and reliability of grafting tools. To address these issues, a portable lychee high grafting variety replacement auxiliary grafting tool is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a portable lychee high grafting auxiliary grafting tool, which aims to improve the problem that the traditional grafting knife sheath in the prior art is prone to loosening or falling off during carrying and high-altitude operations due to the lack of a fixed structure, resulting in the exposure of the blade and posing a safety hazard.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a portable lychee grafting tool for variety replacement, including a handle, a sheath provided on the side wall of the handle, a locking block provided on the outer wall of the sheath, a blade provided on the side wall of the handle, a limiting component provided inside the handle, and a quick-release component provided inside the handle.

[0007] The limiting assembly includes a hollow column, a limiting block, and a locking ball. The outer wall of the hollow column is fixedly connected to the inside of the tool holder. One side wall of the locking ball is fixedly connected to the outer wall of the limiting block. The outer wall of the limiting block is slidably connected to the inside of the hollow column. The locking ball and the locking block engage with each other. A telescopic rod is provided inside the hollow column. One end of the telescopic rod is fixedly connected to the inner wall of the hollow column, and the other end of the telescopic rod is fixedly connected to the outer wall of the limiting block. A spring is provided on the outer wall of the telescopic rod. One end of the spring is fixedly connected to the inner wall of the hollow column, and the other end of the spring is fixedly connected to the outer wall of the limiting block.

[0008] As a further description of the above technical solution:

[0009] The quick-release assembly includes a slider, a sliding post, and a locking hole inside the slider. The outer wall of the slider is slidably connected to the inside of the handle, and the side wall of the slider is fixedly connected to one end of the blade. The sliding post and the locking hole engage with each other.

[0010] As a further description of the above technical solution:

[0011] The sliding column is slidably connected to a second retaining ball, and the outer wall of the second retaining ball is in contact with the inside of the retaining hole.

[0012] As a further description of the above technical solution:

[0013] A spring three is installed inside the sliding column. One end of the spring three is fixedly connected to the inside of the sliding column, and the other end of the spring three is fixedly connected to the outer wall of the ball two.

[0014] As a further description of the above technical solution:

[0015] A sliding rod is fixedly connected to one end of the sliding column, and a hollow block is slidably connected to the outer wall of the sliding rod. The side wall of the hollow block is fixedly connected to the outer wall of the tool holder.

[0016] As a further description of the above technical solution:

[0017] The sliding rod is rotatably connected to a rotating column inside, and a lever is fixedly connected to the outer wall of the rotating column.

[0018] As a further description of the above technical solution:

[0019] A second spring is provided on the outside of the sliding rod. One end of the second spring is fixedly connected to the inside of the hollow block, and the other end of the second spring is fixedly connected to the sliding column. The other end of the second spring is fixedly connected to the side wall of the sliding column.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by inserting the sheath into the handle, the locking block presses against the locking ball and the limiting block, and also presses against the telescopic rod and the spring. This causes the locking ball to retract into the hollow column and restrict the locking block. When the locking block slides to the corresponding position, the spring resets and pushes the locking ball into the locking block groove, thus achieving automatic locking of the sheath. This prevents the sheath from accidentally falling off, solving the problem that traditional grafted knife sheaths, due to the lack of a fixed structure, are prone to loosening or falling off during carrying and high-altitude operations, leading to exposed blades and safety hazards. This improves the safety and reliability of the tool.

[0022] 2. In this utility model, by moving the sliding rod by turning the lever, the sliding column is moved laterally. At this time, the second locking ball is squeezed into the sliding column by the slider and retracts. At the same time, the second spring undergoes elastic deformation due to the sliding pressure of the sliding column, thus unlocking the quick-release assembly of the blade and achieving the effect of quickly disassembling the blade. This solves the problem that traditional grafting knives use screws to fix the blade, which requires the use of a screwdriver for disassembly. This is cumbersome, time-consuming, and leads to low grafting efficiency and affects the work progress. It improves the convenience of tool operation and the efficiency of grafting operations. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the portable lychee grafting tool for variety replacement proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the sheath structure of the portable lychee grafting tool for variety replacement proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the handle structure of the portable lychee grafting tool for variety replacement proposed in this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the slider structure of the portable lychee high grafting and variety replacement auxiliary grafting tool proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the handle structure of the portable lychee grafting tool for variety replacement proposed in this utility model;

[0029] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Handle; 2. Sheath; 3. Locking block; 4. Blade; 5. Hollow column; 6. Limiting block; 7. Locking ball one; 8. Telescopic rod; 9. Spring one; 10. Sliding block; 11. Locking hole; 12. Hollow block; 13. Sliding rod; 14. Sliding column; 15. Pulley; 16. Rotating column; 17. Spring two; 18. Locking ball two; 19. Spring three. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-4 This utility model provides an embodiment of a portable lychee grafting tool, including a handle 1 for gripping and providing a mounting base for a sheath 2 and a blade 4. The sheath 2 is provided on the side wall of the handle 1 for storing and protecting the blade part of the blade 4. A locking block 3 is provided on the outer wall of the sheath 2 for cooperating with a limiting component to fix the sheath 2. The blade 4 is provided on the side wall of the handle 1 and is the cutting component for grafting operations. A limiting component is provided inside the handle 1 to prevent the sheath 2 from accidentally falling off. A quick-release component is provided inside the handle 1 to enable quick disassembly and replacement of the blade 4.

[0034] The limiting assembly includes a hollow column 5, a limiting block 6, and a retaining ball 7. The outer wall of the hollow column 5 is fixedly connected to the inside of the handle 1, providing installation and movement space for the limiting block 6 and the retaining ball 7. The side wall of the retaining ball 7 is fixedly connected to the outer wall of the limiting block 6, and the retaining ball 7 is used to cooperate with the retaining block 3 to achieve locking. The outer wall of the limiting block 6 is slidably connected to the inside of the hollow column 5, and the limiting block 6 is used to drive the retaining ball 7 to move and compress the spring 9. The retaining ball 7 and the retaining block 3 engage, limiting the movement of the sheath 2. The hollow column 5 is equipped with a telescopic rod 8, which is used to limit the movement range of the limiting block 6 and enhance the structural stability. One end of the telescopic rod 8 is fixedly connected to the inner wall of the hollow column 5, and the other end is fixedly connected to the outer wall of the limiting block 6. A spring 9 is provided on the outer wall of the telescopic rod 8. The spring 9 is used to provide a reset elastic force so that the locking ball 7 automatically locks into the groove of the locking block 3. One end of the spring 9 is fixedly connected to the inner wall of the hollow column 5, and the other end is fixedly connected to the outer wall of the limiting block 6.

[0035] Reference Figures 5-7 The quick-release assembly includes a slider 10, a sliding post 14, and a locking hole 11 inside the slider 10. The slider 10 is used to move the blade 4 and engage with the sliding post 14. The outer wall of the slider 10 is slidably connected to the inside of the handle 1, allowing the blade 4 to move axially along the handle 1. The side wall of the slider 10 is fixedly connected to one end of the blade 4, enabling linkage between the blade 4 and the slider 10. The sliding post 14 and the locking hole 11 engage to lock the position of the blade 4. A second locking ball 18 is slidably connected inside the sliding post 14. The second locking ball 18 engages with the locking hole 11 to lock and unlock. The outer wall of the second locking ball 18 contacts the inside of the locking hole 11 to ensure stability during engagement. A third spring 19 is provided inside the sliding post 14. The third spring 19 provides the return force of the second locking ball 18. One end of the third spring 19 is fixedly connected inside the sliding post 14. The other end is fixedly connected to the outer wall of the ball joint 18. One end of the sliding column 14 is fixedly connected to the sliding rod 13. The sliding rod 13 is used to transmit operating force to move the sliding column 14. A hollow block 12 is slidably connected to the outer wall of the sliding rod 13. The hollow block 12 is used to guide the movement direction of the sliding rod 13. The side wall of the hollow block 12 is fixedly connected to the outer wall of the handle 1. A rotating column 16 is rotatably connected inside the sliding rod 13. The rotating column 16 is used to realize the rotational connection of the lever 15. The lever 15 is fixedly connected to the outer wall of the rotating column 16. The lever 15 is used to manually operate and drive the sliding rod 13 to move. A spring 17 is provided outside the sliding rod 13. The spring 17 is used to provide the reset elasticity of the sliding column 14. One end of the spring 17 is fixedly connected to the inside of the hollow block 12. The other end of the spring 17 is fixedly connected to the side wall of the sliding column 14 to ensure that the quick-release assembly can automatically reset after operation.

[0036] Working principle: When the sheath 2 is inserted into the handle 1, the locking block 3 on the outer wall of the sheath 2 first contacts the locking ball 7. During insertion, the locking block 3 squeezes the locking ball 7, causing it to push the limiting block 6 to slide along the inner wall of the hollow column 5 and compress the telescopic rod 8. At the same time, the spring 9 is compressed and stores energy. When the locking block 3 has completely passed the locking ball 7, the elastic restoring force of the spring 9 pushes the limiting block 6 back to its original position, causing the locking ball 7 to engage in the corresponding groove of the locking block 3, forming a lock. When disassembling the blade 4, the locking block can be moved to remove the blade. 15. The rotating column 16 drives the sliding rod 13 to move axially and pushes the sliding column 14 to move laterally. When the sliding column 14 moves, the second retaining ball 18 inside it is squeezed by the slider 10 and retracts into the sliding column 14. At the same time, the third spring 19 is compressed. When the second retaining ball 18 is completely disengaged from the retaining hole 11 of the slider 10, the blade 4 is unlocked and can slide out along the handle 1. During this process, the second spring 17 is compressed and stores energy. After the lever 15 is released, the released potential energy of the second spring 17 resets the quick release assembly.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable grafting tool for high grafting and variety replacement of litchi, including a handle (1), characterized in that: The knife handle (1) has a sheath (2) on its side wall, a locking block (3) on its outer wall, a blade (4) on its side wall, a limiting component inside the knife handle (1), and a quick-release component inside the knife handle (1). The limiting assembly includes a hollow column (5), a limiting block (6), and a locking ball (7). The outer wall of the hollow column (5) is fixedly connected to the inside of the handle (1). The side wall of the locking ball (7) is fixedly connected to the outer wall of the limiting block (6). The outer wall of the limiting block (6) is slidably connected to the inside of the hollow column (5). The locking ball (7) and the locking block (3) are engaged. A telescopic rod (8) is provided inside the hollow column (5). One end of the telescopic rod (8) is fixedly connected to the inner wall of the hollow column (5), and the other end of the telescopic rod (8) is fixedly connected to the outer wall of the limiting block (6). A spring (9) is provided on the outer wall of the telescopic rod (8). One end of the spring (9) is fixedly connected to the inner wall of the hollow column (5), and the other end of the spring (9) is fixedly connected to the outer wall of the limiting block (6).

2. The portable lychee grafting tool for variety replacement according to claim 1, characterized in that: The quick-release assembly includes a slider (10), a sliding post (14), and a locking hole (11) inside the slider (10). The outer wall of the slider (10) is slidably connected to the inside of the handle (1), and the side wall of the slider (10) is fixedly connected to one end of the blade (4). The sliding post (14) and the locking hole (11) engage with each other.

3. The portable lychee grafting tool for variety replacement according to claim 2, characterized in that: The sliding column (14) is slidably connected to a second ball (18), and the outer wall of the second ball (18) is in contact with the inside of the hole (11).

4. The portable lychee grafting tool for variety replacement according to claim 3, characterized in that: A spring three (19) is provided inside the sliding column (14). One end of the spring three (19) is fixedly connected to the inside of the sliding column (14), and the other end of the spring three (19) is fixedly connected to the outer wall of the ball two (18).

5. The portable lychee grafting tool for variety replacement according to claim 2, characterized in that: One end of the sliding column (14) is fixedly connected to a sliding rod (13), and a hollow block (12) is slidably connected to the outer wall of the sliding rod (13). The side wall of the hollow block (12) is fixedly connected to the outer wall of the handle (1).

6. The portable lychee grafting tool for variety replacement according to claim 5, characterized in that: The sliding rod (13) is rotatably connected to a rotating column (16), and a lever (15) is fixedly connected to the outer wall of the rotating column (16).

7. The portable lychee grafting tool for variety replacement according to claim 5, characterized in that: A second spring (17) is provided on the outside of the sliding rod (13). One end of the second spring (17) is fixedly connected to the inside of the hollow block (12), and the other end of the second spring (17) is fixedly connected to the sliding column (14). The other end of the second spring (17) is fixedly connected to the side wall of the sliding column (14).

Images