Novel multifunctional guide tooth adjusting sieve of harvester
By adding triangular guide teeth and strip guide teeth to the harvester sieve, the problem of low sieve separation efficiency is solved, achieving efficient separation of straw and grain and rapid grain feeding, which is suitable for various harvester models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 韩丹丹
- Filing Date
- 2025-03-10
- Publication Date
- 2026-05-15
AI Technical Summary
Existing harvester sieves have problems such as slow grain flow, uneven grain distribution, incomplete screening, easy clogging, and grain leakage when separating straw and grain.
Based on the original fish scale teeth, triangular guide teeth, triangular holes and strip-shaped guide teeth are added. By adjusting the handle connection hole and the adjustment connection plate, the sieve shaft is connected to the U-shaped shaft. The adjustment handle is moved to adjust the opening size and realize the change of sieve angle.
It achieves complete separation of straw and grain, improves operating speed, reduces impurities and grain loss, and is suitable for various harvester models.
Smart Images
Figure CN224234286U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural machinery, and in particular relates to a new type of multifunctional guide tooth adjustment screen for harvesters used for screening grains. Background Technology
[0002] Currently, harvesting crops with combine harvesters can significantly improve production efficiency when they mature. A combine harvester is a machine that integrates harvesting and threshing functions. In addition to cutting the grain, it can separate the grain stalks from the kernels and collect the kernels. The sieve is an important component of the combine harvester; its function is to separate the kernels from the stalks. However, existing sieves suffer from slow grain flow, uneven grain distribution, incomplete screening, frequent clogging, and easy grain loss. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned technologies and provide a new type of multi-functional guide tooth adjustment screen for harvesters that is simple in structure, reasonably designed, can completely separate straw from grains without leakage, and is suitable for use on various models of harvesters.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sieve frame, an adjusting handle, a tail sieve groove, a fixing plate, and a fixing lug are welded together. Multiple rows of fish-scale teeth are distributed on the frame. Multiple triangular guide teeth, triangular holes, and strip-shaped guide teeth are added behind the original fish-scale teeth. These are connected to the adjusting connecting plate via the handle connecting hole. The adjusting sieve shaft is connected to the U-shaped shaft. Moving the adjusting handle adjusts the opening size. As the angle of the fish-scale teeth changes, the triangular guide teeth, triangular holes, and strip-shaped guide teeth also change accordingly.
[0005] The advantages of this utility model are:
[0006] With a simple structure and reasonable design, triangular guide teeth, triangular holes, and strip guide teeth are added to the tail of each fish scale tooth on the basis of the original fish scale tooth. The guide teeth play a role in blocking and diverting the flow on the fish scale tooth. When the fish scale tooth is adjusted, the size of the holes is adjusted to adjust the flow rate, so that the grain is crushed quickly, with less impurities, no grain loss, and clean selection, thereby improving the operation speed. It is suitable for harvesting in various terrains. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the structure of this utility model.
[0008] Figure 2 Here is a schematic diagram of the triangular guide tooth, the strip guide tooth, and the triangular hole structure:
[0009] Figure 3 Here is a schematic diagram of the sieve angle adjustment shaft structure:
[0010] Figure 4 Schematic diagram of the connection hole structure between the connecting plate and the handle:
[0011] Figure 5 Here is a schematic diagram of the tail screen trough and the fixed lifting lug structure:
[0012] Figure 6 Here is a schematic diagram of the adjustment handle and fixing plate structure: Detailed Implementation
[0013] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0014] Depend on Figures 1-6 As can be seen, this utility model comprises a sieve frame 10, an adjusting handle 1, a tail sieve groove 2, a fixing plate 14, and a fixing lug 4 welded together. Multiple rows of fish-scale teeth 9 are distributed on it and connected to the partition plate 7. Multiple triangular guide teeth 5, triangular holes 6, and strip-shaped guide teeth 12 are added behind the fish-scale teeth 9, and the sieve shaft 8 is connected to the U-shaped shaft 13 via the handle connecting hole 11 and the adjusting connecting plate 3. Moving the adjusting handle 1 adjusts the opening size; as the angle of the fish-scale teeth changes, the triangular guide teeth, triangular holes, and strip-shaped guide teeth also change accordingly.
[0015] The fish scale tooth 9 has multiple triangular guide teeth and triangular holes at the rear.
[0016] The fish-scale teeth 9 are provided with multiple strip-shaped guide teeth at the rear.
[0017] The fish scale teeth 9 have triangular mesh holes added at the back.
[0018] This invention allows for the harvesting of various crops such as corn, soybeans, wheat, rice, sorghum, and millet. Depending on the size of the grains being harvested, the sieve frame 10 is pushed into the harvester, and the lifting lugs 4 are fixed to the harvester. The angle of the sieve can be adjusted by the handle 1; its elevation angle is adjustable to suit different terrains, plots, and soil moisture levels. During harvesting, the sieve reciprocates, and the airflow causes it to rise from below. The triangular guide teeth 5, triangular holes 6, and strip guide teeth 12, installed behind the fish-scale teeth 9, control the flow rate and simultaneously divert and block the flow, resulting in faster grain passing, quicker removal of straw and impurities, optimal separation, no clogging of the sieve surface, and a significant increase in harvesting speed.
Claims
1. A novel multifunctional guide tooth adjusting screen for harvesters, comprising a screen frame (10), an adjusting handle (1), a tail screen groove (2), a fixing plate (14), and a fixing lug (4) welded together, characterized in that: Multiple rows of fish scale teeth (9) are distributed on it and connected to the partition plate (7). Multiple triangular guide teeth (5), triangular holes (6), and strip guide teeth (12) are added behind the fish scale teeth (9). They are connected to the adjustment connecting plate (3), the adjustment sieve shaft (8), and the U-shaped shaft (13) through the handle connection hole (11). The size of the opening can be adjusted by moving the adjustment handle (1). As the angle of the fish scale teeth changes, the triangular guide teeth, triangular holes and strip guide teeth also change accordingly.
2. The multifunctional new type of guide tooth adjusting screen for harvesters according to claim 1, characterized in that; The fish scale teeth (9) are provided with multiple triangular guide teeth (5) and triangular holes (6) behind them.
3. The multifunctional new type of guide tooth adjusting screen for harvesters according to claim 1, characterized in that; Multiple strip-shaped guide teeth are provided behind the fish scale teeth (9).
4. The multifunctional new type of guide tooth adjusting screen for harvesters according to claim 1, characterized in that; The shape behind the fish scale teeth (9) is a triangle.