Rotating Reel Bearing Assembly for Flexible Line Deployment
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Solution Overview
Problem
Reel systems used in emergency vehicles are limited by their fixed orientation, making it difficult for a single user to efficiently deploy or retract lines due to the need for optimal positioning, which can result in tangling, kinking, or damage, especially when the line is not perpendicular to the axis of rotation, and existing solutions like roller guards are prone to failure.
Innovation Solution
A reel system with a bearing assembly allowing the reel to rotate 0 to 360 degrees relative to the vehicle, coupled with rotatable fittings and a locking system, enabling a single user to deploy or retract lines with minimal effort and preventing line damage by maintaining optimal orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reel system is fixedly mounted on the vehicle, then the structure is simple and stable, but the deployment and retraction of lines becomes difficult and time-consuming when the vehicle is positioned inaccessibly
Solution Approach 1:
The reel system transitions from a fixed mounted structure to a dynamically adjustable configuration through the bearing assembly that enables rotation of the reel relative to the vehicle body around a second axis perpendicular to the reel's rotation axis, allowing adaptation to various deployment scenarios
Solution Approach 2:
The system adds a rotational degree of freedom around a second axis (perpendicular to the reel's primary rotation axis), enabling the reel to be oriented in different directions relative to the vehicle, thus solving the accessibility problem without requiring complex repositioning of the entire vehicle
2Reliability
If the reel is fixed in orientation, then the mounting structure is simple, but the line becomes difficult to deploy and may become tangled or damaged when the vehicle cannot be optimally positioned
Solution Approach 1:
The bearing assembly provides a dynamic mounting mechanism that allows the reel to rotate relative to the vehicle body, enabling optimal line deployment geometry regardless of vehicle positioning, thus preventing line tangling and damage
Solution Approach 2:
The bearing assembly acts as an intermediary between the fixed vehicle body and the rotating reel, decoupling the reel's operational requirements from the vehicle's positioning constraints and protecting the line from damage caused by improper geometry
3Productivity
If multiple users are required to guide the line during deployment, then the line can be deployed more carefully, but the deployment time increases and a second user may not always be available
Solution Approach 1:
The rotatable reel mechanism dynamically adjusts the line deployment geometry to remain perpendicular to the reel axis regardless of vehicle orientation, enabling single-user operation while maintaining proper line geometry that prevents tangling and ensures smooth deployment
4Adaptability or versatility
If the vehicle is positioned to access the reel, then the reel can be used, but the vehicle may not be optimally positioned relative to the emergency site
Solution Approach 1:
By adding rotation around a second axis perpendicular to the reel's rotation axis, the system enables the reel to be oriented in any direction relative to the vehicle, allowing optimal line deployment geometry regardless of how the vehicle is positioned at the emergency site
Solution Approach 2:
The dynamic rotational capability allows the system to adapt to various vehicle positions and emergency site configurations, maintaining deployment efficiency without requiring optimal vehicle positioning
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
This solution significantly reduces the time and effort required for line deployment or retraction, preventing damage and ensuring effective use in emergency situations by allowing flexible orientation and secure locking.
Implementation Method 1
a bearing assembly including: a first member connected to the base; and a second member connected to the frame and rotatably engaged with the first member to enable relative rotation between the frame and the base around a second axis
Data Source
AI summary
A reel system can include a reel rotatable around a first axis to receive or deploy a windable line a frame supporting the reel, a base supporting the frame, and a bearing assembly. The bearing assembly can include a first member connected to the base and a second member connected to the frame and rotatably engaged with the first member to enable relative rotation between the frame and the base around a second axis.