A picking knife for picking vegetable heart
By combining the positioning rod and the base plate, the depth of the cabbage picking blade is adjustable, which solves the problems of cutting difficulty and damage caused by the fixed blade depth, and improves picking efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 师宗县蔬菜站
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-23
AI Technical Summary
The blade depth of existing Chinese cabbage harvesting knives cannot be adjusted, making it difficult to adapt to harvesting Chinese cabbage at different growth stages, increasing the difficulty of cutting and the risk of damage.
By combining the positioning rod and the base plate, along with the design of the spring, the limiting plate, and the connecting plate, the blade depth can be adjusted. The spring pushes the positioning rod into the positioning hole to fix the blade holder, thus achieving flexible adjustment of the blade depth.
It enables flexible adjustment of blade depth to adapt to different cabbage diameters and user needs, reducing cutting difficulty and damage risk, and improving harvesting efficiency and quality.
Smart Images

Figure CN224386245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural production tools, specifically a harvesting knife for picking Chinese cabbage. Background Technology
[0002] The picker's knife for harvesting Chinese cabbage is a type of auxiliary harvesting device. It can cut the stem of the Chinese cabbage. Depending on the method of use, there are types such as straight-handled knives and thumb knives. It has the advantages of being lightweight and easy to carry, and is a practical tool to improve the efficiency and quality of Chinese cabbage harvesting.
[0003] The existing thumb knife includes components such as a thumb sleeve and a blade. The blade is directly fixed to the outside of the thumb sleeve. When using it, the heart of the cabbage can be cut by pinching with the hand. However, this method of directly fixing the blade does not allow for adjustment of the blade depth. It cannot adjust the blade depth according to the diameter of the cabbage at different growth stages. For example, the diameter of early-maturing cabbage is different from that of late-maturing cabbage. If the blade is too shallow, it increases the difficulty of cutting the thick stems in one go. Repeated overcutting increases the loss of juice. If the blade is too deep, it is easy to damage the basal regenerated buds when cutting the thin stems due to "overcutting".
[0004] To address these issues, we provide a harvesting knife for picking Chinese cabbage. Utility Model Content
[0005] 1) Technical problems to be solved
[0006] This utility model proposes a harvesting knife for picking Chinese cabbage, which solves the problem of the blade depth not being adjustable through the cooperation between the positioning rod and the base plate.
[0007] (ii) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a picking knife for picking Chinese cabbage, including a thumb sleeve, a fixing box fixedly installed inside the thumb sleeve, a base plate slidably connected inside the fixing box, a connecting component installed outside the base plate, and a positioning rod slidably connected inside the base plate;
[0009] A blade holder is slidably connected to the inner wall of the fixed box, a blade is installed on one side of the blade holder, and a positioning hole is opened inside the blade holder;
[0010] A spring is fixedly installed on the outer surface of the base plate, and a positioning ring is fixedly installed on the outer surface of the positioning rod.
[0011] Furthermore, the connecting component includes a limiting plate, which has an L-shaped structure and is fixedly installed with the base plate. A connecting plate is slidably connected inside the limiting plate, and the outer surface of the connecting plate is fixedly installed with the inner wall of the fixing box.
[0012] Furthermore, the outer surface of the positioning rod is slidably connected to the inside of the positioning hole, and multiple sets of the positioning hole are linearly arranged inside the tool holder.
[0013] Furthermore, the fixed box has a fixing hole inside, the outer surface of the positioning rod is slidably connected to the inner wall of the fixing hole, and when the positioning rod is connected to the positioning hole, the other end of the positioning rod enters the interior of the fixing hole.
[0014] Furthermore, a baffle is fixedly installed on the outer surface of the base plate, and the outer surface of the baffle is slidably connected to the outer surface of the tool holder. The baffle and the base plate are arranged perpendicularly.
[0015] Furthermore, the other end of the spring is fixedly installed on the outer surface of the positioning ring, and the spring pushes one end of the positioning rod away from the base plate.
[0016] Furthermore, a pull plate is installed at the other end of the positioning rod, and an anti-slip strip is provided inside the thumb sleeve.
[0017] (iii) Beneficial effects:
[0018] Compared with existing technologies, this harvesting knife for Chinese cabbage has the following advantages:
[0019] 1. This cabbage harvesting knife, through the cooperation between the positioning rod and the base plate, allows the base plate to be installed under the fixed box via the connecting component during installation. The knife holder is then placed inside the fixed box, and the spring-driven positioning rod secures the knife holder. Adjusting different positions of the knife holder allows for different blade depths. When harvesting large-diameter cabbage in concentrated areas, a deeper blade can be selected, while a shallower blade can be chosen for smaller harvests. This makes it more convenient to use and allows for blade depth adjustment, facilitating the selection of different blade depths according to harvesting needs.
[0020] 2. The harvesting knife for this Chinese cabbage is equipped with components such as baffles and fixing holes. The base plate can be installed inside the fixing box through the limiting plate and connecting plate. At this time, the base plate can be fixed to the bottom of the fixing box by the push of the positioning rod by the spring. At this time, the other end of the positioning rod enters the inside of the fixing hole, and the knife holder will be doubly fixed by the base plate and the positioning rod. Conversely, the base plate can be disassembled to facilitate internal cleaning and maintenance. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0022] Figure 1 This is a structural diagram of the present utility model;
[0023] Figure 2 This is a diagram showing the overall internal structure of this utility model;
[0024] Figure 3 This is a diagram showing the internal structure of the fixing box of this utility model;
[0025] Figure 4 This is a structural diagram of the base plate component of this utility model.
[0026] In the diagram: 1. Thumb sleeve; 2. Fixing box; 3. Base plate; 4. Connecting assembly; 401. Limiting plate; 402. Connecting plate; 5. Positioning rod; 6. Blade holder; 7. Blade; 8. Positioning hole; 9. Spring; 10. Positioning ring; 11. Fixing hole; 12. Baffle; 13. Pull plate; 14. Anti-slip strip. Detailed Implementation
[0027] 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.
[0028] like Figure 1 - Figure 4 As shown, this utility model provides a technical solution: a picking knife for picking Chinese cabbage, including a thumb sleeve 1, a fixing box 2 fixedly installed inside the thumb sleeve 1, and an anti-slip strip 14 inside the thumb sleeve 1. Both the thumb sleeve 1 and the anti-slip strip 14 are made of rubber, which is elastic and easy to fix. The fixing box 2 is made of stainless steel and has undergone surface treatment to reduce the impact of corrosive environments.
[0029] The fixed box 2 has a base plate 3 slidably connected inside. A connecting component 4 is installed on the outside of the base plate 3. The connecting component 4 includes a limiting plate 401, which has an L-shaped structure and is fixedly installed with the base plate 3. A connecting plate 402 is slidably connected inside the limiting plate 401. The outer surface of the connecting plate 402 is fixedly installed with the inner wall of the fixed box 2. The fixed box 2 is hollow inside. When the base plate 3 is installed, the limiting plate 401 is placed along the direction of the connecting plate 402. At this time, the L-shaped structure of the limiting plate 401 can limit the vertical movement of the base plate 3, and the base plate 3 will be limited to the bottom of the fixed box 2.
[0030] A blade holder 6 is slidably connected to the inner wall of the fixed box 2. A blade 7 is installed on one side of the blade holder 6. A positioning hole 8 is opened inside the blade holder 6, allowing the blade holder 6 to move inside the fixed box 2. By adjusting the position of the blade holder 6, the distance between the blade 7 and the side of the fixed box 2 can be controlled, and the depth of the blade 7 can be adjusted. Different blade depths of the blade 7 can be selected according to the different diameters of the cabbage heart. For example, a shallower blade 7 can be selected when cutting thinner diameter cabbage hearts to reduce damage to the base of the cabbage heart, while a deeper blade 7 can be selected when harvesting thicker stems to reduce the number of repeated cuts and the tearing rate of the stems. Moreover, it can be adjusted according to different operators. For example, a shallower depth can be adjusted when using the device by someone with weaker strength to reduce the force of a single cut, and vice versa.
[0031] A positioning rod 5 is slidably connected inside the base plate 3. A spring 9 is fixedly installed on the outer surface of the base plate 3. A positioning ring 10 is fixedly installed on the outer surface of the positioning rod 5. The outer surface of the positioning rod 5 is slidably connected to the inside of the positioning hole 8. Multiple sets of positioning holes 8 are arranged linearly inside the tool holder 6. The other end of the spring 9 is fixedly installed on the outer surface of the positioning ring 10. The spring 9 pushes one end of the positioning rod 5 away from the base plate 3. The spring 9 can push the positioning rod 5 into the inside of the positioning hole 8. At this time, the tool holder 6 can be fixed inside the fixed box 2. When the positioning rod 5 is disengaged from the positioning hole 8, the tool holder 6 can be removed. At this time, different types of blades 7 can be replaced, such as serrated blades 7. At the same time, when the spring 9 pushes the base to move in the opposite direction, the limiting plate 401 and the connecting plate 402 provide bidirectional limiting, making the base plate 3 more stable when fixed.
[0032] A baffle 12 is fixedly installed on the outer surface of the base plate 3. The outer surface of the baffle 12 is slidably connected to the outer surface of the knife holder 6. The baffle 12 and the base plate 3 are arranged perpendicularly. The baffle 12 can seal the other side of the fixed box 2 to prevent impurities from entering the interior of the fixed box 2 during harvesting.
[0033] The fixed box 2 has a fixed hole 11 inside. The outer surface of the positioning rod 5 is slidably connected to the inner wall of the fixed hole 11. When the positioning rod 5 is connected to the positioning hole 8, the other end of the positioning rod 5 enters the interior of the fixed hole 11. The other end of the positioning rod 5 is equipped with a pull plate 13, which allows the positioning rod 5 to enter the interior of the fixed hole 11. At this time, the back-and-forth movement of the base plate 3 inside the fixed box 2 is limited, which improves the effect of fixing the positioning rod 5. The movement of the positioning rod 5 can be quickly controlled by the pull plate 13.
[0034] Working principle: Install the base plate 3 inside the fixed box 2. The vertical movement of the base plate 3 can be limited by the connection of the limiting plate 401 and the connecting plate 402. Place the knife holder 6 inside the fixed box 2. At this time, pull the positioning rod 5 to make the positioning rod 5 enter the positioning hole 8 and the fixing hole 11. The spring 9 can push the positioning rod 5 to fix it. At this time, the knife holder 6 is fixed. Conversely, the knife holder 6 can move back and forth inside the fixed box 2, which can adjust the front and back position of the blade 7. Different depth blades 7 can be selected according to different vegetables or different users.
[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", 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.
[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A harvesting knife for picking Chinese cabbage, comprising a thumb sleeve (1), characterized in that: The thumb sleeve (1) has a fixed box (2) installed inside, and a base plate (3) is slidably connected inside the fixed box (2). A connecting component (4) is installed outside the base plate (3), and a positioning rod (5) is slidably connected inside the base plate (3). The inner wall of the fixed box (2) is slidably connected to a knife holder (6), a blade (7) is installed on one side of the knife holder (6), and a positioning hole (8) is opened inside the knife holder (6); A spring (9) is fixedly installed on the outer surface of the base plate (3), and a positioning ring (10) is fixedly installed on the outer surface of the positioning rod (5).
2. The harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: The connecting component (4) includes a limiting plate (401), which is an L-shaped structure and is fixedly installed with the base plate (3). A connecting plate (402) is slidably connected inside the limiting plate (401), and the outer surface of the connecting plate (402) is fixedly installed with the inner wall of the fixing box (2).
3. The harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: The outer surface of the positioning rod (5) is slidably connected to the inside of the positioning hole (8), and multiple sets of the positioning hole (8) are arranged in a straight line inside the tool holder (6).
4. A harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: The fixed box (2) has a fixed hole (11) inside. The outer surface of the positioning rod (5) is slidably connected to the inner wall of the fixed hole (11). When the positioning rod (5) is connected to the positioning hole (8), the other end of the positioning rod (5) enters the interior of the fixed hole (11).
5. A harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: A baffle (12) is fixedly installed on the outer surface of the base plate (3). The outer surface of the baffle (12) is slidably connected to the outer surface of the knife holder (6). The baffle (12) and the base plate (3) are arranged perpendicularly.
6. A harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: The other end of the spring (9) is fixedly installed on the outer surface of the positioning ring (10), and the spring (9) pushes one end of the positioning rod (5) away from the base plate (3).
7. A harvesting knife for picking Chinese cabbage according to claim 1, characterized in that: The other end of the positioning rod (5) is equipped with a pull plate (13), and the inside of the thumb sleeve (1) is provided with an anti-slip strip (14).