Track Maintenance Safety Line Mounts for Fall Prevention
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Solution Overview
Problem
Service work on track maintenance machines poses safety risks due to the machines' height and the danger of adjacent tracks, with existing solutions failing to provide adequate protection against falls.
Innovation Solution
A track maintenance machine equipped with vertically spaced mounts and safety lines extending in the longitudinal direction, allowing workers to latch onto a safety leash for secure movement during operations, preventing falls by enabling quick deployment of safety lines outside the track's clearance profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety line is positioned within the clearance profile, then it does not interfere with track passage, but it cannot provide adequate fall prevention for workers at height
Solution Approach 1:
The mount is designed to be movable between a retracted position (within clearance profile) and an extended position (outside clearance profile). This dynamic positioning allows the safety line to provide fall prevention when needed while not interfering with track passage during normal operation.
Solution Approach 2:
The safety line system transitions from a two-dimensional plane within the clearance profile to a three-dimensional position outside the clearance profile by extending the mount vertically and horizontally, allowing workers to be secured outside the restricted space without blocking track passage.
2Reliability
If a safety line is extended outside the clearance profile, then fall prevention is reliable, but it increases device complexity and deployment time
Solution Approach 1:
The safety line system is divided into multiple segments with individual mounts at different positions along the machine. Each mount can be independently positioned, allowing the safety line to be configured in sections rather than requiring a single complex extended structure.
Solution Approach 2:
The mount mechanism is designed to be easily deployable and retractable by the workers themselves during service operations, reducing the need for complex automated deployment systems and minimizing deployment time.
3Reliability
If workers are restricted in movement during service work, then safety is maintained, but productivity decreases
Solution Approach 1:
The system changes the safety parameter from fixed positional restriction to dynamic safety boundary definition. The safety line moves with the worker as they relocate along the machine, maintaining safety while allowing continuous movement and service work at different positions.
Solution Approach 2:
The safety line system serves multiple functions: it provides fall prevention, allows worker mobility along the machine, and can be positioned at different locations to accommodate various service tasks. This multi-functionality maintains safety while supporting productive work operations.
Data Source
AI summary
A track maintenance machine for carrying out track maintenance operations includes a plurality of mounts disposed at a distance from one another in the longitudinal direction of the machine in an upper end region of the machine relative to a vertical. A lower end of each mount relative to the vertical is mounted on the track maintenance machine, while an upper end of each mount located at a distance from the lower end is connected to a safety line extending in the longitudinal direction of the machine. A method for carrying out service work on track maintenance machines is also provided.