Special tool for rapid castration of oilseed rape
By designing a rapeseed emasculation tool consisting of a blade holder, blade base, and blades, the problem of time-consuming and labor-intensive traditional methods has been solved, achieving efficient emasculation of rapeseed buds and improving breeding efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DRY LAND FARMING INST OF HEBEI ACAD OF AGRI & FORESTRY SCI
- Filing Date
- 2025-07-28
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional methods for removing male stamens from rapeseed flower buds are time-consuming, labor-intensive, inefficient, and easily damage the pistil, affecting breeding progress and efficiency.
A special tool was designed, which includes a knife holder, a knife base, and a blade. The blade can be detachably installed on the knife base, and the knife holder can be movably connected. It is suitable for rapeseed buds of different sizes, is easy to operate, and improves the efficiency of removing tassels.
This method saves time and effort in removing emasculation from rapeseed flower buds, improves breeding efficiency and quality, and promotes the progress of rapeseed hybridization breeding.
Smart Images

Figure CN224219113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rapeseed care equipment, and in particular to a tool for quickly removing emasculation from rapeseed buds. Background Technology
[0002] Rapeseed is an important oilseed crop in my country, with the main varieties being Brassica napus and Brassica rapa. For rapeseed breeding, hybridization during the flowering period is one of the most important aspects of hybridization breeding. Traditionally, tweezers are used to manually open unopened flower buds, removing the stamens for later use. Furthermore, Brassica rapa varieties are often self-incompatible; after the flowers open, a layer of callosity forms on the stigma of the pistil, preventing fertilization by its own pollen. However, maintaining self-homozygia is crucial in breeding. Therefore, for Brassica rapa breeding, physically opening flower buds before the callosity forms on the stigma and then artificially pollinating them is one of the most common breeding methods.
[0003] However, due to the unique reproductive characteristics of rapeseed, completely removing the flower bud epidermis often leads to the shedding of the pistil. Therefore, for subsequent pollination, tweezers are typically used to divide the flower bud epidermis into two halves during the bud opening process. The upper half of the bud is then removed to expose the stigma of the pistil, followed by the removal of the stamens using tweezers. Currently, this method has the following problems: manual removal of flower buds and stamens is labor-intensive, costly, time-consuming, inefficient, and easily damages the stigma of the pistil. Moreover, in many scientific studies involving rapeseed hybridization, the above factors, coupled with the short flowering period of rapeseed, result in a limited number of hybrid combinations, severely impacting breeding progress.
[0004] Therefore, this utility model provides a new technical solution to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a special tool for rapid deemasculation of rapeseed, which is easy to operate, highly efficient, time-saving and labor-saving, and improves the efficiency of rapeseed hybridization breeding.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A special tool for quickly removing the emasculation from rapeseed includes two blade holders, a blade base, and a blade. The blade is detachably mounted on the blade base, and the blade base is detachably mounted on the blade holder. The two blade holders are movably connected.
[0008] The upper end of the tool holder is provided with multiple arc-shaped notches, and the lower end of the tool holder is provided with a tool groove, which communicates with the arc-shaped notches;
[0009] The blade has an arc-shaped cutting edge, and the blade can be embedded in the cutting groove. The arc-shaped cutting edge is adapted to the arc-shaped notch.
[0010] The present invention is further configured such that the tool holder is integrally connected to a connecting seat, the upper end face of the connecting seat is provided with a horizontally arranged limiting groove, and the lower end face of the tool holder is integrally connected to a limiting part, the limiting part being able to be embedded in the limiting groove to abut and limit.
[0011] The present invention is further configured such that the cutting groove is formed on the lower end surface of the limiting part, the upper end of the blade abuts against the upper end surface of the cutting groove, and the lower end of the blade abuts against the lower bottom surface of the limiting groove for limiting.
[0012] The present invention is further configured such that the side of the limiting part has a plurality of longitudinal through notches, which are arranged at transverse intervals.
[0013] The present invention is further configured such that the arc-shaped notches on the tool holder are arranged equidistantly side by side, and the size of the arc-shaped notches decreases sequentially from the inside to the outside.
[0014] The present invention is further configured such that the cutting edge of the arc-shaped blade protrudes from the arc-shaped notch on the blade holder.
[0015] The present invention is further configured such that a through connecting hole is provided on the tool holder, and two tool holders are arranged crosswise and movably connected by bolts passing through the connecting hole.
[0016] The present invention is further configured to include a handle, which is sleeved on the end of the tool holder away from the tool base.
[0017] The beneficial effects of this utility model are as follows: The rapeseed bud demasking shears of this utility model adopt a detachable installation of the blade holder, blade base and blade, the overall structure is simple, easy to use, easy to disassemble and assemble, and the blade can be replaced at any time, saving time and effort. Compared with the traditional rapeseed bud demasking method, the operation speed is fast, which can greatly improve the efficiency of rapeseed self-pollination and hybridization, greatly promote the breeding progress, and thus improve the quantity and quality of rapeseed breeding. It is more practical and adaptable. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a special tool for rapid demasking of rapeseed in this embodiment.
[0019] Figure 2 This is an exploded view of a portion of the structure of a special tool for rapid demasking of rapeseed in this embodiment.
[0020] Figure 3 This is a cross-sectional view of the blade holder of a special tool for rapid demasking of rapeseed in this embodiment.
[0021] Figure 4 This is a schematic diagram of the blade holder structure of a special tool for quickly removing the emasculation from rapeseed in this embodiment.
[0022] Reference numerals: Tool holder 1; Connecting seat 11; Limiting groove 111; Upper end face 112; Lower bottom face 113; Connecting hole 12; Bolt 13; Tool holder 2; Limiting part 21; Lower end face 111; Notch 22; Tool groove 23; Upper end face 231; Arc-shaped notch 24; Lower end face 25; Blade 3; Arc-shaped cutting edge 31; Tool handle 4; Detailed Implementation
[0023] 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.
[0024] This embodiment discloses a special tool for rapid demasking of rapeseed, referring to... Figures 1-4 As shown, it mainly includes two tool holders 1, a tool base 2, and a blade 3. Each tool holder 1 is detachably mounted with a tool base 2, and the tool base 2 is mounted with a detachable and replaceable blade 3. The two tool holders 1 are arranged crosswise and are movably connected by bolts 13. A handle 4 is installed at the end of the tool holder 1 away from the tool base 2 for easy hand operation by the user.
[0025] Reference Figure 1 and Figure 2 As shown, both tool holders 1 are provided with connecting holes 12. The two tool holders 1 are arranged crosswise and are movably connected by bolts 13 through the connecting holes 12. The tool holder 1 is integrally connected with a connecting seat 11. The connecting seat 11 is arc-shaped on the outward side and has an upper end face 112 on the inward side. The upper end face 112 has a horizontally arranged limiting groove 111. The limiting groove 111 passes through the end away from the tool holder 4 and is mainly used to fix the tool holder 2. The tool holder 2 has a conical structure. A limiting part 21 is integrally connected to the lower end face 25 of the tool holder 2. The limiting part 21 can be inserted into the limiting groove 111 to abut and limit, so that the tool holder 2 can be detachably installed on the connecting seat 11 on the tool holder 1 for easy replacement and maintenance.
[0026] Reference Figure 2As shown, multiple arc-shaped notches 24 are provided at the upper end of the blade holder 2. The arc-shaped notches 24 are arranged side by side at equal intervals, and the size of the arc-shaped notches 24 decreases from the inside to the outside, which can be used for rapeseed buds of different sizes. Multiple longitudinal through notches 22 are provided on the side of the limiting part 21 integrally connected to the lower end of the blade holder 2. The notches 22 are arranged at horizontal intervals. A longitudinally arranged blade groove 23 is provided on the lower end face 211 of the limiting part 21. The upper end of the blade groove 23 is connected to the annular notch 24, and the blade groove 24 penetrates the limiting part 21 downward.
[0027] Reference Figure 2 and Figure 4 As shown, an arc-shaped cutting edge 31 is provided at the upper end of the blade 3, which is adapted to the arc-shaped notch 24 on the blade holder 2. The blade 3 can be inserted into the cutting groove 23 provided on the blade holder 2. The upper end of the blade 3 abuts against the upper end face 231 of the cutting groove 23 to form a limiting installation. A cutting edge is provided at the arc-shaped cutting edge 31, and the cutting edge protrudes from the end face of the arc-shaped notch 24 on the blade holder 2. Multiple notches 22 are provided on the side of the limiting part 21 to facilitate the disassembly, assembly and replacement of the blade.
[0028] Reference Figure 3 and Figure 4 As shown, after inserting the blade 3 into the blade groove 23 from the lower end face 211 of the limiting part 21, the blade holder 2 with the blade 3 installed is horizontally set so that the end of the limiting part 21 integrally connected to the lower end of the blade holder 2 is flush with the end of the limiting groove 111 opened on the connecting seat 11. Then, the blade holder 2 is pushed laterally into the limiting groove 111 to form a limiting installation. The upper end of the blade 3 abuts against the upper end face 231 of the blade groove 23, and the lower end of the blade 3 abuts against the lower bottom face 113 of the limiting groove 111, forming a fixed clamping of the blade 3, improving the connection strength and clamping stability of the blade 3, and facilitating its use.
[0029] When using the scissors in this embodiment to demast rapeseed buds, the two blade holders 1 mesh with each other, causing the blade holders 2 mounted on the connecting seat 11 to abut against each other. This creates a ring structure with the arc-shaped notches 24 on the two blade holders 2, which can clamp the outer periphery of the rapeseed buds. The protruding blades of the arc-shaped notches 24 can cut the outer periphery of the rapeseed buds, thus quickly completing the demasting process. Moreover, the blade holders 2 are equipped with arc-shaped notches 24 of different sizes, which can be matched according to the size of the rapeseed buds. This is convenient, quick, and time-saving, and can improve the efficiency of rapeseed self-pollination and hybridization, greatly promote the breeding progress, and thus improve the quantity and quality of rapeseed breeding.
[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A special tool for quickly removing the emasculation from rapeseed, characterized in that, It includes two tool holders (1), a tool base (2) and a blade (3), wherein the blade (3) is detachably mounted on the tool base (2), the tool base (2) is detachably mounted on the tool holder (1), and the two tool holders (1) are movably connected to each other; The upper end of the tool holder (2) is provided with multiple arc-shaped notches (24), and the lower end of the tool holder (2) is provided with a tool groove (23), which is connected to the arc-shaped notches (24); The blade (3) has an arc-shaped cutting edge (31), and the blade (3) can be embedded in the cutting groove (23). The arc-shaped cutting edge (31) is adapted to the arc-shaped notch (24).
2. The special tool for rapid deemasculation of rapeseed according to claim 1, characterized in that, The tool holder (1) is integrally connected to a connecting seat (11). The upper end face (112) of the connecting seat (11) is provided with a horizontally arranged limiting groove (111). The lower end face (25) of the tool holder (2) is integrally connected to a limiting part (21). The limiting part (21) can be embedded in the limiting groove (111) to abut and limit.
3. A special tool for rapid deemasculation of rapeseed according to claim 2, characterized in that, The cutting groove (23) is opened on the lower end face (211) of the limiting part (21), the upper end of the blade (3) abuts against the upper end face (231) of the cutting groove (23), and the lower end of the blade (3) abuts against the lower bottom face (113) of the limiting groove (111) for limiting.
4. A special tool for rapid demasking of rapeseed according to claim 3, characterized in that, The limiting part (21) has multiple longitudinal through notches (22) on its side, and the notches (22) are arranged at horizontal intervals.
5. A special tool for rapid deemasculation of rapeseed according to claim 1, characterized in that, The arc-shaped notches (24) on the tool holder (2) are arranged side by side at equal intervals, and the size of the arc-shaped notches (24) decreases from the inside to the outside.
6. A special tool for rapid deemasculation of rapeseed according to claim 1, characterized in that, The blade edge (31) of the blade (3) protrudes from the arc-shaped notch (24) on the blade holder (2).
7. A special tool for rapid deemasculation of rapeseed according to claim 1, characterized in that, The tool holder (1) has a through connection hole (12), and the two tool holders (1) are arranged crosswise and connected by bolts (13) passing through the connection hole (12).
8. A special tool for rapid deemasculation of rapeseed according to claim 1, characterized in that, It also includes a handle (4), which is fitted onto the end of the tool holder (1) away from the tool seat (2).