Rotatable Wheel Guard Apparatus for Rail Maintenance Access
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Solution Overview
Problem
Conventional wheel guard systems require significant labor and time to move and reposition, posing obstacles during maintenance and rail grinding operations, and fail to simultaneously prevent wheel derailment and vehicle deviation from the track effectively, necessitating multiple components and high costs.
Innovation Solution
A wheel guard apparatus with a fixed portion attached to a railroad tie, a rotatable movable portion, and a guard rail with outer and inner stopper portions, allowing easy repositioning and stable support to prevent derailment and deviation, featuring a concave-convex thread for vertical stability and a load supporting portion for enhanced load management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional guard members are laid using bolts and nuts, then the guard member can be securely fixed to prevent wheel derailment, but it becomes extremely troublesome to attach and detach and requires much time and labor to move
Solution Approach 1:
The guard member is divided into multiple sections that can be independently moved and positioned. Each section can be separately attached or detached, reducing the overall complexity of installation and removal operations while maintaining continuous protection along the rail.
Solution Approach 2:
The guard member incorporates movable and adjustable components that allow it to be quickly repositioned along the rail without complete detachment. The dynamic design enables rapid adjustment between different operational states (installed/removed) while maintaining secure fixation when in position.
2Productivity
If heavy guard members are moved by hand to places away from the main line rail, then the working range for tamping machines is cleared, but much time and labor are required
Solution Approach 1:
A movable support structure or intermediary mechanism is introduced to facilitate the transfer of the guard member from the rail position to a storage position. This intermediary system reduces the manual handling burden and accelerates the relocation process, enabling faster clearance of the working area for maintenance equipment.
Solution Approach 2:
The guard member incorporates self-contained features such as integrated handles, rolling elements, or self-locking mechanisms that enable operators to move and position it more easily without requiring additional equipment or extensive manual effort, thereby reducing the time and labor needed for relocation.
3Reliability
If multiple structures like guard members and safety rails are laid along the main line rail, then comprehensive protection against derailment and deviation is achieved, but they become obstacles during maintenance and rail grinding work requiring temporary removal
Solution Approach 1:
The guard member system incorporates movable and adjustable components that allow it to be quickly repositioned or reconfigured during maintenance operations. This dynamic design enables the structure to adapt between providing protection and clearing the working area, eliminating the need for complete removal while maintaining operational flexibility.
Solution Approach 2:
The guard member is designed to serve multiple functions: it provides continuous protection against wheel derailment, can be rapidly repositioned to clear working areas for tamping and grinding operations, and maintains structural integrity throughout. This multi-functionality eliminates the need for separate structures and enables compatibility with various maintenance activities.
Data Source
AI summary
A wheel guard apparatus capable of preventing a wheel from derailing and preventing a vehicle from seriously deviating from a track even if the wheel has derailed includes a fixed portion fixed to a railroad tie located between main line rails; a movable portion supported by a rotating shaft provided on the fixed portion and extending in a horizontal direction and configured to be rotatable around the rotating shaft toward a track center side; and a guard rail located at a position separated from the rotating shaft of the movable portion and held to extend in parallel with the main line rail. The guard rail includes an outer stopper portion configured to prevent the wheel from derailing toward an inner side of the main line rail and an inner stopper portion configured to prevent a derailed vehicle from deviating to an outer side of a track.