Elastic Element Oscillation for Straw Walker Sieve Clogging
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Solution Overview
Problem
Existing combine harvester separation devices face clogging issues due to short straw mats forming between shaker combs, which restrict grain passage through sieve-like coverings.
Innovation Solution
Incorporating an elastic element that oscillates on the surface of the tray shaker steps, extending over half the length of the covering, to loosen and dissolve short straw mats, ensuring sieve-like coverings remain free for grain passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tray shakers with sieve-like coverings are used for grain separation, then grain separation efficiency is improved, but short straw mats form on the coverings causing clogging and restricting grain passage
Solution Approach 1:
An oscillating loosening device with loosening elements is positioned above the shaker combs to apply mechanical vibration and oscillating motion to the crop mat and short straw mats on the sieve-like coverings. This vibration loosens and dissolves the short straw mats, preventing clogging while maintaining grain separation efficiency through the coverings.
Solution Approach 2:
The oscillating loosening device acts as an intermediary between the tray shaker system and the crop material. It introduces additional loosening action specifically targeted at the short straw mats forming on the coverings, without interfering with the primary grain separation function of the tray shakers.
2Productivity
If shaker combs are arranged closely for effective straw separation, then straw separation is improved, but the area between combs becomes restricted causing crop flow issues
Solution Approach 1:
The oscillating loosening device applies vibration to the crop mat in the area between the shaker combs, preventing the formation of dense, restricted crop flow. This maintains open pathways for crop movement while preserving the close comb arrangement needed for effective straw separation.
3Object-generated harmful factors
If elastic elements are added to loosen short straw mats, then clogging is reduced, but device complexity increases
Solution Approach 1:
The oscillating loosening device uses simple oscillating motion and elastic loosening elements to achieve loosening and anti-clogging effects. The design leverages the existing oscillating motion of the tray shaker system, adding only the necessary loosening elements without requiring complex mechanical systems or multiple moving parts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The elastic element effectively prevents or reduces clogging, maintaining the openness of sieve-like coverings for efficient grain separation by loosening short straw mats, thereby enhancing the separation process.
Implementation Method 1
the at least one elastic element can be excited by the movement of the separation device to carry out an oscillating movement
Implementation Method 2
at least one elastic element rests on the surface of the covering at least one step of the respective tray shaker
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The separator (3) has several stages (14) of straw walkers (4) while stages are provided lining sections (15). A superior shaker comb is arranged between two lining sections. The surface of the lining section is provided with openings for the deposition of grains from a grain-straw mixture. An elastic element (17) movably rests on the surface of the lining section in each stage of each straw walkers, such that elastic element moves in oscillating manner by the movement of the separator, and is fixed to one end (19) of the straw walker. USE : Separator for combine harvester. ADVANTAGE : The loosening of straw walkers can be prevented and accumulation of the crop in fastening region can be prevented. DESCRIPTION OF DRAWINGS : The drawing shows a sectional view of the separator. 3 : Separator 4 : Straw walker 14 : Stages of straw walker 15 : Lining sections 17 : Elastic element 19 : One end of the straw walker.