Loss Test Tray With Transverse Grooves For Grain Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing loss test pans for determining threshing losses in harvesting machines require complex and difficult separation processes for straw, chaff, and grain, making the determination of threshing losses cumbersome.
Innovation Solution
A loss test tray with transverse grooves on its upper side and a lateral collector, where the grooves are designed to collect grains and simplify separation by allowing grains to settle at the bottom and be easily collected, along with a rotatable tube collector and a vibration motor to aid in separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a loss test pan is used to collect lost grains, straw and chaff, then the determination of threshing loss can be performed, but the separation process for chaff, straw and grain becomes very complex and difficult to carry out
Solution Approach 1:
The loss test pan is divided into functionally distinct zones: transverse grooves for grain collection, a collector for separated grains, and open areas for straw and chaff. This segmentation allows automatic separation of grain from straw/chaff through the groove structure during normal operation, eliminating complex manual separation processes while maintaining measurement precision.
Solution Approach 2:
The grain separation function is extracted from the general collection function and implemented through dedicated transverse grooves that passively separate grains from straw and chaff. The collector is specifically designed to receive only separated grains, extracting the measurement function from the complex mixture handling process.
2Reliability
If transverse grooves are aligned transversely to the direction of travel of the harvester, then lost grains are retained better, but the alignment requirement adds operational complexity
Solution Approach 1:
The transverse grooves are designed to automatically align with the harvester's direction of travel through their orientation relative to the harvester's movement. The grooves self-adjust to the operational context, requiring no manual alignment or operational complexity from the user while ensuring reliable grain retention.
3Ease of operation
If a rotatable tube collector is used to receive lost grains, then the collection process is simplified, but the device structure becomes more complex
Solution Approach 1:
The tube collector is designed to rotate dynamically to different positions, allowing it to receive grains from multiple directions and orientations. This dynamic capability simplifies the collection process by adapting to various grain flow directions without requiring complex fixed-structure mechanisms, achieving operational simplicity through controlled movement rather than structural complexity.
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 solution enables a simplified and efficient separation of straw, chaff, and grain, allowing for accurate determination of threshing losses without the need for complex separation processes, thereby optimizing operating parameters of harvesting machines.
Implementation Method 1
The loss test tray (1) has a vibration motor (5) for vibrating the loss test tray (1)
Implementation Method 2
when the loss test pan is shaken and the collected material is wind sifted, the grains settle at the bottom of the transverse grooves
Implementation Method 3
when the loss test pan is shaken and the collected material is wind sifted, the grains settle at the bottom of the transverse grooves
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a loss test tray (1) for determining the threshing loss of harvesting machines, which is designed to be placed on the ground and to be at least partially driven over by a combine harvester during threshing and serves to collect the lost grains as well as straw and chaff, wherein the loss test tray (1) has transverse grooves (2) on its upper side and a collector (3) arranged laterally on the loss test tray (1) at one end of the transverse grooves (2).