Opposite Belt Seeding Device for Seed Distance Consistency
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Solution Overview
Problem
Existing seed metering devices in agricultural machinery suffer from inconsistent seed distribution due to random seed movement trajectories and increased falling speed, leading to variable seed placement in the seed bed.
Innovation Solution
An opposite belt-type precise seeding device featuring a U-shaped seed metering tube with parallel conveying devices, a conveyor belt system, and a soft layer to stabilize seed movement, using gears for synchronized belt rotation and a conveying plate to guide seeds into the seed bed with controlled trajectory and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a tubular seed conveying tube is used to guide seed movement, then the seed can be transported from the metering device to the seed bed, but the seed movement trajectory becomes random and seed distance consistency deteriorates
Solution Approach 1:
The conveying tube is segmented into multiple sections with guiding walls that divide the internal space. These walls create multiple sub-channels that guide seeds along controlled trajectories, preventing random movement while maintaining transport efficiency.
Solution Approach 2:
Guiding walls are introduced as intermediary structures within the conveying tube. These walls act as mediators that redirect and control seed movement paths, ensuring consistent seed spacing by preventing direct random collisions with the tube walls.
2Speed
If seeds fall through gravity acceleration in the conveying tube, then the seed transport speed increases, but the seed impact speed with the ground increases causing greater jump and reduced consistency
Solution Approach 1:
A cushioning layer of soft material (such as rubber or foam) is provided at the bottom of the conveying tube, before seeds reach the ground. This cushioning layer absorbs impact energy and reduces seed bounce, maintaining consistent seed placement even at higher transport speeds.
Solution Approach 2:
The physical parameters of the conveying tube bottom are changed by introducing a soft, deformable material with specific elasticity and damping properties. This material parameter change allows the system to absorb impact energy while maintaining controlled seed release characteristics.
3Ease of operation
If the seed metering device is positioned high above the seed bed, then the seed can be delivered to the planting position, but the seed movement trajectory changes and speed variation increases
Solution Approach 1:
The vertical conveying path is segmented into multiple sections with guiding walls that create controlled sub-channels. This segmentation maintains seed trajectory control over the vertical distance, preventing speed variation while enabling high-position delivery.
Solution Approach 2:
The conveying tube incorporates curved guiding surfaces and smooth transitions instead of sharp angles. These curved surfaces guide seeds smoothly through the vertical drop, maintaining consistent speed and trajectory by reducing turbulence and random collisions.
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 effectively reduces seed damage, maintains consistent seed placement by controlling seed movement and speed, and minimizes collision bounce with the soil, enhancing seed bed consistency.
Implementation Method 1
a soft layer consisting of fluff or a brush is provided on the outer side of the conveyor belt
Implementation Method 2
the two driving shafts or the two driven shafts are provided with gears meshed with each other
Implementation Method 3
the speed at which seeds fall into the seed bed after gravity acceleration in the process of falling
Data Source
AI summary
The present invention discloses an opposite belt-type precise seeding device. The opposite belt-type precise seeding device comprises a seed metering tube consisting of a U-shaped shell and a cover plate, two conveying devices provided inside the seed metering tube in parallel, and a conveying plate provided at the lower end of the seed metering tube. The opposite belt-type precise seeding device belongs to the field of agricultural machinery. In a seeder, a tubular seed conveying tube is usually used for guiding movement of seeds, but the movement of the seeds in the seed conveying tube has certain randomness, so that the seed distance consistency of the seeds in a seed bed is reduced. Through control of the seeds by the conveying devices, the stable movement of the seeds is achieved and the seed distance consistency of the seeds in the seed bed is guaranteed.