Grooving cutter for citrus tree grafting

Abstract

The utility model discloses a grooving cutter for citrus tree grafting, and belongs to the field of fruit tree grafting tools. A grooving cutter for citrus tree grafting comprises a cutter handle and a cutter head rotationally connected to the cutter handle, and further comprises a blocking strip installed on the cutter handle, a protection pad is fixedly connected to the side, close to the cutter handle, of the blocking strip, a forming groove is formed in the protection pad, an elastic piece is arranged on the cutter handle, and when the blocking strip is subjected to external acting force, the elastic piece is fixed to the cutter handle. A clamping area is formed between the protection pad and the knife handle through the elastic force of the elastic piece and used for limiting fingers in the forming groove, and a carborundum sharpening stone used for sharpening the knife head is installed on the knife handle. The blocking strip and the protection pad are adjusted through the elastic piece, the hand of a user can be clamped in a self-adaptive mode, the situation that the grooving cutter falls off due to fatigue of the hand is avoided, meanwhile, the detachable carborundum sharpening stone is integrated on the cutter handle, the user can conveniently polish and maintain the cutter head, and therefore the grafting efficiency of citrus trees is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fruit tree grafting tools, and in particular to a grooving knife for grafting citrus trees. Background Technology

[0002] Grafting is a method of plant cultivation and propagation that involves grafting the stem and bud of one plant onto the trunk of another. Especially in citrus grafting, it facilitates rapid growth of the grafted seedlings and increases yield. With societal development, many new high-position grafting techniques for citrus trees have been introduced to the market.

[0003] When grafting citrus trees, a grooving knife is needed to groove the trunk. Traditional grooving knives are mostly single-edged with uniform blade thickness. The force is concentrated during the split, which can precisely control the depth of the split and avoid splitting the rootstock or making the split too deep. In addition, the angle between the handle and the blade is usually 120°-135°, which is ergonomic and makes it easier for the grafting master to exert force and reduce operator fatigue.

[0004] However, when grooving citrus trees, the user's wrist exerts continuous force, which can easily cause hand fatigue, causing the grooving knife to slip from the hand, thus increasing the safety hazard. In addition, the blade of the grooving knife is prone to dulling after prolonged use, requiring the use of an external whetstone to sharpen it. However, traditional whetstones are large and inconvenient to carry, thus affecting the grafting efficiency of citrus trees. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the prior art, the grooving knife is not easy to position for the user's hand, and it is easy to fall out of the user's hand when the user's hand is tired, thereby increasing the safety hazard. Therefore, a grooving knife for grafting citrus trees is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grooving knife for grafting citrus trees includes a handle and a blade head rotatably connected to the handle, and a stop bar installed on the handle. A protective pad is fixedly connected to the side of the stop bar near the handle, and the protective pad has a shaped groove. An elastic element is provided on the handle. When the stop bar is subjected to an external force, the protective pad forms a clamping area with the handle through the elastic force of the elastic element, which is used to limit the fingers in the shaped groove. A diamond whetstone for sharpening the blade head is installed on the handle.

[0008] To drive the stop bar to move and grip the user's hand, preferably, the elastic element includes: a fixing pin, inserted into the knife handle, with a first nut threaded onto the fixing pin and abutting against the knife handle; a positioning rod slidably connected within the fixing pin, wherein one end of the positioning rod passes through the fixing pin and is threaded onto a second nut, the stop bar is sleeved on the positioning rod, and both sides of the stop bar abut against the fixing pin and the second nut respectively; and a tension spring, disposed within the fixing pin, with both ends of the tension spring fixedly connected to the fixing pin and the positioning rod respectively.

[0009] To further limit the lateral movement of the positioning rod, a limiting rod is sleeved on the inner side of the tension spring. One end of the limiting rod is fixedly connected to the positioning rod, and the other end of the limiting rod is slidably connected to the fixing pin.

[0010] To prevent the baffle from causing wear and tear on the user's hands, the pad is preferably composed of a sponge and a fabric, with the fabric wrapped around the outside of the sponge.

[0011] To facilitate the assembly and disassembly of the diamond whetstone, preferably, the handle is provided with a threaded hole, and a threaded post that is fixedly connected to the diamond whetstone is threaded into the threaded hole.

[0012] To facilitate carrying the grooving tool by the user, preferably, a back clip is detachably installed on the side of the tool handle away from the stop bar.

[0013] To improve the efficiency of blade sharpening, preferably, the diamond sharpening stone is cylindrical, and the diamond sharpening stone has an oblique opening on the side away from the threaded post.

[0014] Compared with the prior art, this utility model provides a grooving knife for grafting citrus trees, which has the following beneficial effects:

[0015] 1. The grooving knife for grafting citrus trees has an elastic element that allows for adaptive adjustment of the stop bar, thereby increasing the stability of holding the grooving knife.

[0016] 2. The grooving knife for grafting citrus trees uses a cylindrical diamond whetstone with an angled edge, which not only makes it easy to carry the diamond whetstone but also improves the grinding quality and efficiency of the knife head.

[0017] 3. The grooving knife for grafting citrus trees has a back clip, which makes it convenient for users to carry the grooving knife, thereby improving the portability and safety of the grooving knife.

[0018] The parts of this device not described herein are the same as or can be implemented using existing technology. This utility model adjusts the stop bar and the protective pad with an elastic element, which can adaptively clamp the user's hand and prevent the grooving knife from falling due to hand fatigue. At the same time, a detachable diamond whetstone is integrated on the handle, which can facilitate the user to sharpen and maintain the knife head, thereby improving the grafting efficiency of citrus trees. Attached Figure Description

[0019] Figure 1 This is a first-view structural isometric schematic diagram of a grooving knife for grafting citrus trees proposed in this utility model;

[0020] Figure 2 This is a second-view axonometric schematic diagram of the grooving knife for grafting citrus trees proposed in this utility model;

[0021] Figure 3 This is a schematic diagram showing the structure of the diamond whetstone for a grooving knife used for grafting citrus trees, as proposed in this utility model.

[0022] Figure 4 This utility model proposes a grooving knife for grafting citrus trees. Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a partial exploded view of the grooving knife for grafting citrus trees proposed in this utility model.

[0024] In the diagram: 1. Handle; 2. Cutting head; 3. Stop bar; 4. Protective pad; 5. Diamond whetstone; 6. Fixing pin; 61. First nut; 62. Positioning rod; 63. Second nut; 64. Tension spring; 65. Limiting rod; 7. Threaded hole; 8. Threaded post; 9. Back clip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example:

[0028] Reference Figures 1-5 A grooving knife for grafting citrus trees includes a handle 1 and a blade head 2 rotatably connected to the handle 1. It also includes a stop strip 3 mounted on the handle 1. A pad 4 is fixedly connected to the side of the stop strip 3 closest to the handle 1. The pad 4 is composed of sponge and fabric, with the fabric wrapping around the outside of the sponge. The pad 4 has a shaped groove. The sponge and fabric pad 4 improves the comfort of finger restraint. The shaped groove design allows the pad 4 to conform to the contour of the user's fingers, increasing the restraint effect. An elastic element is provided on the handle 1. When the stop strip 3 is subjected to external force... At this time, the pad 4 forms a clamping area with the handle 1 through the elastic force of the elastic element, which is used to limit the fingers in the forming groove. The handle 1 is equipped with a diamond whetstone 5 for sharpening the blade head 2. The handle 1 has a threaded hole 7, and the threaded hole 7 is threaded with a threaded post 8 that is fixedly connected to the diamond whetstone 5. The diamond whetstone 5 is easy to disassemble by using the threaded hole 7 and the threaded post 8. The diamond whetstone 5 is cylindrical, and the side of the diamond whetstone 5 away from the threaded post 8 has an oblique opening. The oblique opening design facilitates the sharpening of the blade.

[0029] Specifically, by adjusting the stop bar 3 and the pad 4 through the elastic element, the grooving knife can be adaptively clamped to the user's hand, preventing it from falling due to hand fatigue. At the same time, a detachable diamond whetstone 5 is integrated on the handle 1, which makes it convenient for the user to grind and maintain the blade head 2, thereby improving the grafting efficiency of citrus trees.

[0030] The elastic element includes: a fixing pin 6, which is inserted into the tool holder 1, and the fixing pin 6 is threaded with a first nut 61 that abuts against the tool holder 1, and there are two first nuts 61; a positioning rod 62 that is slidably connected in the fixing pin 6, wherein one end of the positioning rod 62 passes through the fixing pin 6 and is threadedly connected with a second nut 63, and a stop strip 3 is sleeved on the positioning rod 62, and both sides of the stop strip 3 abut against the fixing pin 6 and the second nut 63 respectively; a tension spring 64, which is disposed in the fixing pin 6, and both ends of the tension spring 64 are fixedly connected to the fixing pin 6 and the positioning rod 62 respectively, and a limiting rod 65 is sleeved on the inner side of the tension spring 64, one end of the limiting rod 65 is fixedly connected to the positioning rod 62, and the other end of the limiting rod 65 is slidably connected in the fixing pin 6, so that the positioning rod 62 can be laterally limited by the limiting rod 65.

[0031] Specifically, by setting up the elastic element, the stop bar 3 can be adaptively adjusted, thereby increasing the stability of holding the grooving tool.

[0032] The back clip 9 is detachably installed on the side of the handle 1 away from the stop bar 3 by screws.

[0033] Specifically, the back clip 9 makes it easier for users to carry the grooving tool, thereby improving the portability and safety of the grooving tool.

[0034] Working principle: When holding the handle 1, the user inserts their fingers into the shaped groove of the pad 4 and uses the pushing force of their fingers to push the pad 4 and the stop bar 3 outward, causing the stop bar 3 to move laterally. When the stop bar 3 moves laterally, it drives the positioning rod 62 to move. When the positioning rod 62 moves, it stretches the tension spring 64. When the user's fingers are fully inserted and moved to the appropriate position, the reaction force of the tension spring 64 resets the stop bar 3 and the pad 4, so that the pad 4 is tightly attached to the user's fingers, thus completing the clamping of the hand and preventing the grooving knife from falling due to hand fatigue.

[0035] When maintaining the blade head 2, the user rotates the diamond grinding stone 5. When the threaded post 8 at one end of the diamond grinding stone 5 disengages from the inner cavity of the threaded hole 7, the diamond grinding stone 5 can be removed from the handle 1 to perform grinding on the blade head 2. The threaded connection makes it convenient to carry the diamond grinding stone 5.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grooving knife for grafting citrus trees, comprising a handle (1) and a blade (2) rotatably connected to the handle (1), characterized in that, It also includes a stop bar (3) mounted on the tool holder (1), Among them, the side of the stop bar (3) near the handle (1) is fixedly connected to the pad (4), the pad (4) is provided with a forming groove, and the handle (1) is provided with an elastic element. When the stop bar (3) is subjected to an external force, the pad (4) forms a clamping area with the handle (1) through the elastic force of the elastic element, which is used to limit the fingers in the forming groove. The handle (1) is equipped with a diamond whetstone (5) for sharpening the blade head (2).

2. The grooving knife for grafting citrus trees according to claim 1, characterized in that, The elastic element includes: A fixing pin (6) is inserted into the tool holder (1), and a first nut (61) that abuts against the tool holder (1) is threaded onto the fixing pin (6); The positioning rod (62) is slidably connected within the fixing pin (6). One end of the positioning rod (62) passes through the fixing pin (6) and is threadedly connected to the second nut (63). The stop bar (3) is sleeved on the positioning rod (62), and the two sides of the stop bar (3) abut against the fixing pin (6) and the second nut (63) respectively. A tension spring (64) is disposed inside the fixing pin (6), and the two ends of the tension spring (64) are fixedly connected to the fixing pin (6) and the positioning rod (62) respectively.

3. The grooving knife for grafting citrus trees according to claim 2, characterized in that, The inner side of the tension spring (64) is fitted with a limiting rod (65), one end of the limiting rod (65) is fixedly connected to the positioning rod (62), and the other end of the limiting rod (65) is slidably connected in the fixing pin (6).

4. The grooving knife for grafting citrus trees according to claim 1, characterized in that, The pad (4) is composed of a sponge and a fabric, with the fabric wrapped around the outside of the sponge.

5. A grooving knife for grafting citrus trees according to claim 1, characterized in that, The handle (1) is provided with a threaded hole (7), and a threaded post (8) is fixedly connected to the diamond whetstone (5) inside the threaded hole (7).

6. A grooving knife for grafting citrus trees according to claim 1, characterized in that, The back clip (9) is detachably installed on the side of the handle (1) away from the stop bar (3).

7. A grooving knife for grafting citrus trees according to claim 1, characterized in that, The diamond whetstone (5) is cylindrical, and the diamond whetstone (5) has an oblique opening on the side away from the threaded column (8).

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