Baler Twine Cradle Pivot Mechanism for Ground-Level Loading
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Solution Overview
Problem
Existing balers face challenges in safely and conveniently loading twine spools due to high placement of twine boxes, requiring operators to reach high or use ladders, which is dangerous and uncomfortable.
Innovation Solution
A twine cradle system that moves between loading, intermediate, and operational positions via rotational and translational movements about a horizontal pivot, allowing for easy loading and reduced space requirements, eliminating the need for complex hinges or locks, and enabling safe and comfortable operation at ground level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the twine box is placed high on the baler frame, then it provides stable mounting and adequate space for twine storage, but operators must reach high or use ladders to load spools, creating safety hazards and discomfort
Solution Approach 1:
The twine cradle is designed to be movable between multiple positions (loading position, intermediate position, operational position) rather than fixed. This dynamic positioning allows the cradle to be lowered to ground level for safe loading, then raised to operational height during use, eliminating the need for operators to reach high or use ladders while maintaining stable mounting throughout operation
2Device complexity
If a complex hinge or lock mechanism is used to control the twine cradle movement, then the range of motion can be precisely controlled, but the device complexity increases and more space is required for the mechanisms
Solution Approach 1:
The patent removes complex hinge or lock mechanisms from the system entirely. Instead, it uses a simple pivot point with a horizontal axis of rotation that inherently provides the necessary range of motion control through geometry and gravity, eliminating unnecessary components and reducing both complexity and space requirements
Solution Approach 2:
The pivot mechanism is designed to be self-regulating, where the horizontal axis of rotation and the positioning of the cradle allow gravity and simple manual effort to control the movement range without requiring active locking or complex control systems. The mechanism serves itself by using the weight of the cradle and spools to naturally limit motion
3Object-affected harmful factors
If the twine cradle is lowered to ground level for loading, then operators can load safely and comfortably, but more space is required to the side of the baler for the movement arc
Solution Approach 1:
The cradle transitions from a static to a dynamic positioning system, moving between loading position (ground level), intermediate position, and operational position (raised). This dynamic movement allows the cradle to be at ground level during loading to ensure safety and comfort, then raised during operation without requiring permanent side space for the entire movement arc
4Ease of operation
If additional support structures are added to stabilize the twine cradle during movement, then the cradle can be more precisely positioned, but the device complexity and space requirements increase
Solution Approach 1:
The pivot mechanism with horizontal axis of rotation provides inherent positioning stability through gravity and the geometric constraints of the pivot point. The cradle naturally settles into stable positions during movement without requiring additional support structures, achieving precise positioning through the physics of the system rather than mechanical reinforcement
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 twine cradle system facilitates safe and comfortable loading of twine spools at ground level, reducing the risk of injury and improving operational efficiency by minimizing space requirements and simplifying the mechanism, allowing for easy integration into baler designs without the need for additional support structures.
Implementation Method 1
the twine cradle is movable between the loading position and the intermediate position by a rotational movement about a pivot that defines a horizontal axis of rotation
Implementation Method 2
the twine cradle is movable between the intermediate position and the operational position by a translational movement
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
A baler comprising a twine box (402), which comprises a frame (516) and a twine cradle (514). The twine cradle (514) is for holding one or more spools of twine (504) and is mounted to the frame (516). The twine cradle (514) is movable between a loading position (518) and an operational position (522), via an intermediate position (520). In the loading position (518), a spool of twine (504) can be loaded into the twine cradle (514). In the operational position (522), twine can be removed from a spool of twine (504) within the twine cradle (514) in order to tie a bale. The twine cradle (514) is movable between the loading position (518) and the intermediate position (520) by a rotational movement (526) about a pivot (524) that defines a horizontal axis of rotation. The twine cradle (514) is movable between the intermediate position (520) and the operational position (522) by a translational movement (528).