Self-aligning Hay Bale Unroller Attachment
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Solution Overview
Problem
Existing hay bale handling attachments require manual reconfiguration and are inefficient when dealing with hay bales of varying lengths, as they need to be detached and reattached to accommodate different sizes, posing safety risks and operational inefficiencies.
Innovation Solution
A vehicle attachment system that automatically adjusts the spear alignment to accommodate hay bales of various lengths from 3.5 to 6 feet without manual reconfiguration, using a support structure with pivotable arms and spacing links to maintain coaxial alignment of spears, allowing for secure engagement and unrolling of hay bales of non-standard sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual reconfiguration is used to accommodate different hay bale lengths, then the attachment can handle various sizes, but operational efficiency decreases and safety risks increase
Solution Approach 1:
The attachment system employs dynamic arms that can automatically adjust their position and orientation based on the length of the hay bale. The arms are equipped with actuators or control mechanisms that enable them to move from fixed positions to accommodate bales ranging from 3.5 to 6 feet in length, eliminating the need for manual reconfiguration and maintaining continuous operational efficiency
Solution Approach 2:
The system changes operational parameters such as arm angle, spear penetration depth, and clamp force dynamically based on detected bale length. By sensing the bale dimensions and automatically adjusting these parameters, the attachment maintains optimal performance across varying bale sizes without requiring operational interruption or manual intervention
2Device complexity
If fixed arm positions are used, then the attachment structure is simple, but it can only handle one specific hay bale length
Solution Approach 1:
The arms transition from fixed to dynamically adjustable positions through integrated actuators. The dynamic system maintains relatively simple overall structure while enabling continuous adjustment of arm spacing and orientation to match different hay bale lengths, achieving versatility without excessive complexity
Solution Approach 2:
The attachment design incorporates universal arms that can perform multiple functions across different operating conditions. The same arm structure serves both short 3.5-foot bales and long 6-foot bales by adjusting its configuration, eliminating the need for multiple specialized attachments and maintaining structural simplicity
3Adaptability or versatility
If spears are not coaxially aligned, then the attachment can engage longer bales, but the hay bale will tear and break during rotation
Solution Approach 1:
The system incorporates sensing mechanisms that detect hay bale length and provide feedback to the control system. Based on this feedback, the arms automatically adjust their positions to ensure spear coaxial alignment is maintained throughout the unrolling process, preventing bale tearing and breakage while accommodating various bale lengths
Solution Approach 2:
The spear alignment system dynamically adjusts arm positions and spear orientations in real-time during operation. This dynamic adjustment ensures that spears remain coaxially aligned with the bale axis regardless of bale length variations, maintaining hay bale integrity throughout the unrolling process
Data Source
AI summary
An attachment for an industrial or farm vehicle is designed to engage, carry and unroll a round hay bale. The attachment can be adjusted to interact with hay bales of various lengths. The attachment includes a support structure with features to attach to the vehicle. A first end of a first arm is pivotably connected proximate a first end of the support structure. A first end of a second arm is pivotably connected proximate the first end of the support structure. A spacing link is pivotably connected to second ends of the first and second arms. A first hay bale spear is attached to the spacing link. A third arm has a first end pivotably connected proximate a second end of the support structure. A second hale bay spear is attached proximate to a second end of the third arm and faces toward the first hay bale spear.