Emergency Brake Cable Tensioning Tool with Load Cell
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Solution Overview
Problem
Conventional emergency brake cable tensioning systems require multiple workers and stations, leading to inefficiencies and inaccuracies in tension measurement, resulting in variations in brake performance.
Innovation Solution
A mechanical tensioning tool and method that uses a rotational driver with a load cell for direct tension measurement, forming a rigid mechanical column to accurately measure and apply tension, reducing the need for multiple workers and stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional apparatus are used for emergency brake cable tensioning, then the system can be assembled, but multiple workers and assembly stations are required, increasing complexity and cost
Solution Approach 1:
The patent combines multiple functions (tensioning, measurement, and control) into a single integrated apparatus. The load cell integrates force measurement directly into the tensioning mechanism, eliminating the need for separate measurement devices and multiple workers, thereby reducing assembly station requirements while maintaining productivity
Solution Approach 2:
The load cell acts as an intermediary element that directly measures the tension force in the brake cable system during assembly. This intermediary measurement capability allows for real-time monitoring and control of tension levels, enabling a single worker to perform both tensioning and verification functions that previously required multiple workers and stations
2Manufacturing precision
If indirect tension measurement methods are used, then the assembly process can proceed, but measurement accuracy is limited causing wide variation in ultimate tension
Solution Approach 1:
The patent replaces indirect mechanical measurement methods (strain gauges, transducers) with a direct mechanical measurement approach using a load cell. The load cell provides direct force measurement through mechanical means, eliminating the need for indirect characterization and significantly improving measurement accuracy and reducing tension variation
Solution Approach 2:
The load cell integrates the measurement function directly into the tensioning apparatus, allowing the system to self-measure and self-regulate tension levels. This self-service capability eliminates the need for separate measurement devices and operators, providing accurate real-time feedback for precise tension control
3Extent of automation
If automated mechanisms with hydraulics or pneumatics are used, then human involvement is reduced, but maintenance problems and system complexity increase
Solution Approach 1:
The patent extracts and eliminates complex hydraulic or pneumatic systems from the automated tensioning mechanism. By using a mechanically-driven apparatus with a load cell for measurement and control, the invention achieves automation without the maintenance problems and complexity associated with fluid power systems
Solution Approach 2:
The patent employs a mechanically-simple, robust tensioning apparatus that does not rely on complex hydraulic or pneumatic components. This approach favors simpler, more durable mechanical elements over sophisticated but maintenance-prone automated systems, reducing long-term operational complexity
Data Source
AI summary
A brake tensioning system and method are described herein for use on vehicles. The system includes a tool, and the method includes the use of the tool to effectuate tensioning of a brake system conveniently, accurately, and repeatably.