Deformable Quadrilateral Linkage for Parallel Lid Control
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Solution Overview
Problem
Existing seed dispensing devices face difficulties in handling and sealing due to large, wind-exposed lids that are cumbersome to close and require complex mechanisms, leading to instability and increased costs.
Innovation Solution
A dispensing device with a deformable quadrilateral connecting rod system that allows the lid to be easily manipulated and reduces wind exposure, featuring a pair of connecting rods hinged between the storage tank and cover, forming a parallelogram to maintain a parallel position and facilitate smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large lid is used to cover the opening of the storage tank, then the coverage and protection are improved, but the ease of operation deteriorates due to difficult handling and closing
Solution Approach 1:
The lid is divided into two separate half-lids instead of one large lid. Each half-lid can be independently opened, closed, and handled, significantly improving ease of operation while maintaining full coverage when both are in place
Solution Approach 2:
The lid system incorporates sliding mechanisms that allow the half-lids to move dynamically between closed and open positions. The guide rails and rollers enable smooth movement, making handling easier despite the large coverage area
2Area of stationary object
If a large lid is used to cover the opening of the storage tank, then the coverage is improved, but the device complexity increases due to additional sealing requirements
Solution Approach 1:
By segmenting the lid into two half-lids, the sealing problem is divided into two separate, simpler sealing joints instead of one large complex seal. Each sealing joint is easier to design, manufacture, and maintain
Solution Approach 2:
The sealing solution uses simple, replaceable sealing elements that can be easily replaced when worn. This approach reduces the complexity of designing a single complex permanent seal system
3Ease of operation
If the lid is positioned vertically at the front of the hopper, then the opening is accessible, but the surface exposed to wind increases making closing difficult
Solution Approach 1:
The lid system allows dynamic positioning where half-lids can be partially open during filling operations, reducing wind exposure while maintaining accessibility. The sliding mechanism enables flexible adjustment of the lid position
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 simplifies lid handling, reduces wind exposure, and enhances stability while minimizing the risk of seed damage during closure, improving operational efficiency and reducing the complexity and cost of sealing.
Implementation Method 1
at least one pair of connecting rods (11, 12) hinged between said storage tank (2) and said cover (5) and arranged so as to substantially form a deformable quadrilateral
Implementation Method 2
said connecting rods are arranged so as to substantially form a deformable quadrilateral
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The apparatus has a storage tank (2) with a cover (5) for covering an upper part (3). The tank has a disengaging unit (10) for disengaging the cover in a plane parallel to a plane containing an upper edge (6) of the upper part. The disengaging unit has connecting rods (11, 12) articulated between the tank and the cover. The connecting rods are arranged for forming a deformable quadrangle. A locking device (25) locks the cover in open position.