Nut picking knife
By designing a three-sided blade and an adjustable length fixing rod, the problems of limited functionality and poor adaptability of nut harvesting knives have been solved, enabling multifunctional and efficient harvesting operations.
Patent Information
- Application Number
- CN202522161603.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-13
AI Technical Summary
Existing nut harvesting knives have limited functionality, require frequent blade replacements, and their shaft design lacks flexibility, resulting in poor adaptability and reduced harvesting efficiency.
The design incorporates a three-sided cutting head with an adjustable length fixing rod and extension rod. The cutting length is locked by a locking block and a tilting block, enhancing adaptability.
This improves the practicality and adaptability of nut harvesting knives, making them suitable for harvesting needs in different scenarios, reducing the frequency of tool replacements, and increasing harvesting efficiency.
Smart Images

Figure CN224670381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of harvesting knife technology, and in particular to a nut harvesting knife. Background Technology
[0002] In the nut cultivation industry, harvesting is a crucial part of the production process, and the practicality of harvesting tools directly affects operational efficiency and costs. Currently, most nut harvesting tools on the market suffer from limited functionality.
[0003] Existing nut-picking knives mostly employ single- or double-edged blades, offering only basic cutting or chopping functions. This necessitates frequent blade changes for different scenarios, increasing tool carrying costs, interrupting the harvesting process, significantly reducing efficiency, and failing to meet diverse harvesting needs. Furthermore, the handle design of existing nut-picking knives also has significant limitations: most use a fixed-length handle. When harvesting nuts at higher elevations, workers must use stools or other auxiliary tools and cannot flexibly adjust the working distance. These design flaws prevent the tools from adapting to the nut's growth height, resulting in poor adaptability and difficulty in meeting the harvesting needs of different planting environments and tree heights. Utility Model Content
[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a nut harvesting knife that greatly improves the practicality and functionality of the nut harvesting knife, adapts to harvesting operations in different scenarios, and can be locked after the extension rod is adjusted in length, thereby improving the adaptability of the nut harvesting knife.
[0005] This utility model also provides a nut-picking knife as described above, including a blade head, a threaded rod at the lower end of the blade head, a fixed rod threadedly connected to the outer wall of the threaded rod, an extension rod slidably connected to the lower end of the fixed rod, a threaded sleeve on the outer wall of the extension rod, a locking sleeve threadedly connected to the outer wall of the threaded sleeve, and an inclined locking block fixedly connected to the inner wall of the locking sleeve.
[0006] According to the nut-picking knife of this utility model, a connecting handle is fixedly connected to the inner wall of the blade head, and the lower end of the connecting handle is fixedly connected to the upper end of the threaded rod.
[0007] According to the nut-picking knife of this utility model, the outer wall of the threaded rod is threaded with a fastening nut.
[0008] According to the nut-picking knife of this utility model, a fixing block is fixedly connected to the outer wall of the extension rod, and a threaded sleeve is fixedly connected to the lower end of the upper end of the fixing block.
[0009] According to the nut-picking knife of this utility model, a locking block is fixedly connected to the upper end of the threaded sleeve.
[0010] According to the nut-picking knife of this utility model, the inner wall of the locking sleeve is slidably connected to the outer wall of the fixing rod.
[0011] According to the nut-picking knife of this utility model, the outer wall of the extension rod is fixedly connected with an anti-slip sleeve.
[0012] According to the nut harvesting knife of this utility model, the lower end of the extension rod is fixedly connected to a base, and the lower end of the base is fixedly connected to a hanging ring.
[0013] Beneficial effects:
[0014] 1. By designing the blade head with a three-sided cutting structure, the nut harvester knife can simultaneously perform cutting, chopping, and harvesting functions, greatly improving the practicality and functionality of the nut harvester knife and adapting it to harvesting operations in different scenarios.
[0015] 2. The length of the nut harvesting knife can be adjusted by setting a fixed rod and an extension rod. The locking block and tilting block set at the connection between the fixed rod and the extension rod can lock the extension rod after the length is adjusted, which improves the adaptability of the nut harvesting knife. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a perspective view of the nut-picking knife of this utility model;
[0018] Figure 2 This is a diagram showing the internal structure of the nut-picking knife of this utility model;
[0019] Figure 3 In this utility model Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 This is a diagram showing the connection structure between the locking block and the slanting block of the nut-picking knife of this utility model;
[0021] Legend:
[0022] 1. Cutting head; 2. Connecting handle; 3. Fixing rod; 4. Extension rod; 5. Locking block; 6. Threaded sleeve; 7. Fixing block; 8. Anti-slip sleeve; 9. Base; 10. Lifting ring; 11. Locking sleeve; 12. Threaded rod; 13. Fastening nut; 14. Inclined block. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] Reference Figure 1-4 The nut-picking knife of this utility model includes a blade head 1, a threaded rod 12 at the lower end of the blade head 1, a fixed rod 3 threadedly connected to the outer wall of the threaded rod 12, an extension rod 4 slidably connected to the lower end of the fixed rod 3, a threaded sleeve 6 on the outer wall of the extension rod 4, a locking sleeve 11 threadedly connected to the outer wall of the threaded sleeve 6, and an inclined locking block 14 fixedly connected to the inner wall of the locking sleeve 11.
[0025] A connecting handle 2 is fixedly connected to the inner wall of the cutter head 1, and the lower end of the connecting handle 2 is fixedly connected to the upper end of the threaded rod 12.
[0026] Specifically, a connecting handle 2 is provided on one side of the cutter head 1, and a threaded rod 12 is fixed at the lower end of the connecting handle 2. The upper end of the cutter head 1 can be fixed by the threaded rod 12.
[0027] The threaded rod 12 has a fastening nut 13 connected to its outer wall by threads.
[0028] Specifically, the threaded rod 12 has a fastening nut 13 threadedly connected to its outer wall. By tightening the fastening nut 13, the threaded rod 12 can be fixed and prevented from falling off.
[0029] The extension rod 4 is fixedly connected to the outer wall of the fixing block 7, and the upper end of the fixing block 7 is fixedly connected to the lower end of the threaded sleeve 6.
[0030] Specifically, a fixing block 7 is fixedly connected to the outer wall of the extension rod 4, and the extension rod 4 is fixed by the threaded sleeve 6 provided at the upper end of the fixing block 7.
[0031] The upper end of the threaded sleeve 6 is fixedly connected to a locking block 5.
[0032] Specifically, the upper end of the threaded sleeve 6 is provided with a locking block 5. When the locking block 5 is subjected to force, it clamps inward and locks the internal components.
[0033] The inner wall of the locking sleeve 11 is slidably connected to the outer wall of the fixing rod 3.
[0034] Specifically, the inner wall of the locking sleeve 11 is slidably connected to the outer wall of the fixing rod 3 to lock the fixing rod 3.
[0035] The extension rod 4 is fixedly connected to the outer wall with an anti-slip sleeve 8.
[0036] Specifically, the extension rod 4 is fixedly connected to the outer wall with an anti-slip sleeve 8, which can prevent the extension rod 4 from sliding and make it more convenient for workers to pick nuts.
[0037] The lower end of the extension rod 4 is fixedly connected to the base 9, and the lower end of the base 9 is fixedly connected to the lifting ring 10.
[0038] Specifically, the lower end of the extension rod 4 is provided with a base 9, and the lower end of the base 9 is fixedly connected to a hanging ring 10, which can be tied with a rope inside and hung up when not in use.
[0039] Working principle: First, by designing the blade head 1 with a three-sided blade structure, the nut harvesting knife can simultaneously perform cutting, chopping, and harvesting functions, enhancing its practicality. The blade head 1 is fixed to the upper end of the lower fixing rod 3 via the connecting handle 2 and the threaded rod 12 at the lower end. An extension rod 4 is slidably connected to the inner wall of the fixing rod 3, and a fixing block 7 is fixedly connected to the outer wall of the extension rod 4. A locking block 5 and a threaded sleeve 6 are provided at the upper end of the fixing block 7. A locking sleeve 11 is threadedly connected to the outer wall of the threaded sleeve 6. The locking sleeve 11 is slidably connected to the outer wall of the fixing rod 3. By rotating the locking sleeve 11, the locking sleeve 11 is tightened. When tightening, the inclined block 14 provided on the inner wall of the locking sleeve 11 applies an inward force to the locking block 5 on the inner wall, so that the locking block 5 locks the fixing rod 3 on the inner wall, fixing the lower extension rod 4. The outer wall of the extension rod 4 is provided with an anti-slip sleeve 8, and the lower end is provided with a lifting ring 10 for easy scraping.
[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A nut-harvesting knife, including a blade (1), characterized in that: The lower end of the cutter head (1) is provided with a threaded rod (12), and a fixing rod (3) is threadedly connected to the outer wall of the threaded rod (12). An extension rod (4) is slidably connected to the lower end of the fixing rod (3). A threaded sleeve (6) is provided on the outer wall of the extension rod (4). A locking sleeve (11) is threadedly connected to the outer wall of the threaded sleeve (6). An inclined locking block (14) is fixedly connected to the inner wall of the locking sleeve (11).
2. The nut-harvesting knife according to claim 1, characterized in that, The inner wall of the cutter head (1) is fixedly connected to a connecting handle (2), and the lower end of the connecting handle (2) is fixedly connected to the upper end of the threaded rod (12).
3. The nut-harvesting knife according to claim 1, characterized in that, The threaded rod (12) has a fastening nut (13) threadedly connected to its outer wall.
4. The nut-harvesting knife according to claim 1, characterized in that, The extension rod (4) is fixedly connected to a fixing block (7) on its outer wall, and the upper end of the fixing block (7) is fixedly connected to the lower end of a threaded sleeve (6).
5. The nut-harvesting knife according to claim 1, characterized in that, The upper end of the threaded sleeve (6) is fixedly connected to a locking block (5).
6. The nut-harvesting knife according to claim 1, characterized in that, The inner wall of the locking sleeve (11) is slidably connected to the outer wall of the fixing rod (3).
7. The nut-harvesting knife according to claim 1, characterized in that, The extension rod (4) is fixedly connected to the outer wall with an anti-slip sleeve (8).
8. The nut-harvesting knife according to claim 1, characterized in that, The lower end of the extension rod (4) is fixedly connected to a base (9), and the lower end of the base (9) is fixedly connected to a lifting ring (10).