Adjustable Baler Feeder Duct for Uniform Bale Density
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Solution Overview
Problem
Agricultural balers face issues with uneven bale density and shape due to discontinuous filling of the baling chamber, particularly with crop materials like silage that have high moisture content, leading to blockages and wear in the feeder duct, and existing solutions fail to adequately address these problems.
Innovation Solution
A feeder duct with an adjustable upper wall that allows for a continuously variable cross section, controlled by adjusting means such as hydraulic or electrical actuators, to optimize the filling of the baling chamber and prevent blockages, ensuring even bale density and shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed cross-section feeder duct is used, then the structure is simple, but the baling chamber cannot be evenly filled with certain crop materials leading to uneven bale density
Solution Approach 1:
The feeder duct cross-section is made variable through a movable upper wall that can be adjusted to different positions. This dynamic structure allows the feeder duct to adapt its cross-sectional area to match the characteristics of different crop materials and operating conditions, enabling even filling of the baling chamber and uniform bale density while maintaining operational simplicity.
2Manufacturing precision
If the upper wall is made movable to adjust cross section, then even filling is achieved, but the device complexity increases
Solution Approach 1:
The invention changes the geometric parameter of the feeder duct cross-section by moving the upper wall to a different position. This parameter adjustment allows optimization of the filling process for various crop materials without requiring complex mechanical systems, achieving even bale density through a relatively simple adjustable mechanism.
3Productivity
If crop material is continuously fed, then productivity increases, but blockages occur in the feeder duct
Solution Approach 1:
The movable upper wall allows dynamic adjustment of the feeder duct cross-section to prevent blockages during continuous operation. When blockage risk is detected or occurs, the upper wall can be moved to increase the cross-sectional area, creating more space for crop material flow and eliminating blockages, thus maintaining continuous high-speed operation and reliability.
4Reliability
If the feeder duct cross section is increased, then blockage prevention is improved, but wear on the duct increases
Solution Approach 1:
Instead of permanently increasing the feeder duct cross-section, the invention uses a movable upper wall that can temporarily expand the cross-sectional area only when needed to prevent or clear blockages. This dynamic adjustment prevents chronic blockages that cause wear while minimizing the duct's exposure to high-stress conditions, thereby extending the feeder duct's operational lifespan while maintaining blockage prevention capability.
Data Source
AI summary
A baler having an adjusting mechanism, for setting the upper end of the upper wall in a predetermined position, and the lower end of the upper wall is designed to pivot around an axis near the entry point of the feeder into the lower end of the upper wall, such that the cross section of the feeder duct is variable.