Cross-Tie Pre-Plating Apparatus With Hydraulic Positioning
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Solution Overview
Problem
The pre-plating process of cross-ties is complicated due to variations in dimensions, requiring precise placement of tie-plates to maintain uniform spacing and parallel orientation, which is challenging with existing methods that rely on manual alignment and gravity-fed systems prone to jamming and imprecise placement.
Innovation Solution
A cross-tie pre-plating apparatus with a conveyor system, positioning mechanisms, and hydraulic controls that include a stop member, positioning rail, tie-plate positioning mechanisms, and a gauge to ensure accurate and efficient placement of tie-plates on cross-ties, using hydraulic cylinders for precise alignment and spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual alignment and gravity-fed systems are used for tie-plate placement, then device complexity is reduced, but manufacturing precision deteriorates due to imprecise placement and spacing variations
Solution Approach 1:
The patent replaces manual alignment and gravity-fed mechanical systems with a hydraulic positioning system. Hydraulic cylinders are used to actively position and hold tie-plates at precise locations, eliminating the imprecision of passive mechanical systems while maintaining manageable complexity through standardized hydraulic components.
Solution Approach 2:
The patent introduces positioning rails and gauges as intermediary elements between the tie-plates and the placement mechanism. These intermediaries provide reference surfaces and physical constraints that guide the tie-plates into correct positions, enabling precise placement without requiring complex direct control mechanisms.
2Reliability
If gravity-fed systems are used for tie-plate delivery, then ease of operation is improved, but reliability deteriorates due to jamming issues
Solution Approach 1:
The patent replaces the gravity-fed mechanical delivery system with a hydraulic positioning system. Instead of relying on gravity to move tie-plates, hydraulic cylinders actively control the placement, eliminating jamming issues while requiring minimal operator intervention through automated positioning and holding functions.
Solution Approach 2:
The hydraulic positioning system incorporates automatic positioning and holding capabilities that reduce the need for continuous operator intervention. The system serves itself by maintaining tie-plate positions through hydraulic pressure and mechanical constraints, improving reliability without sacrificing ease of operation.
3Manufacturing precision
If cross-ties are not rigorously sorted by dimension, then loss of time in preparation is reduced, but manufacturing precision deteriorates due to varying tie dimensions requiring different plate placements
Solution Approach 1:
The patent uses adjustable hydraulic positioning systems that can adapt to varying cross-tie dimensions. The positioning rails and hydraulic cylinders can be adjusted or repositioned to accommodate different tie widths and lengths, maintaining uniform plate spacing without requiring rigorous sorting of cross-ties by dimension.
Solution Approach 2:
The positioning mechanism is designed with universal capabilities to handle various cross-tie dimensions. The combination of positioning rails, gauges, and adjustable hydraulic components creates a multi-functional system that can accommodate different tie sizes while maintaining precise plate placement, eliminating the need for time-consuming sorting.
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
The apparatus enables efficient pre-plating of cross-ties at a rate of approximately 100 per hour with improved accuracy and reduced operator intervention, minimizing jamming and ensuring uniform plate placement, thus facilitating faster and more precise railroad track assembly.
Implementation Method 1
hydraulic controls that include a stop member, positioning rail, tie-plate positioning mechanisms, and a gauge to ensure accurate and efficient placement of tie-plates on cross-ties, using hydraulic cylinders for precise alignment and spacing
Data Source
AI summary
A railroad cross-tie pre-plating apparatus for fastening at least two tie-plates to a cross-tie may include a cross-tie conveyor comprising a first end and a second end, with a cross-tie positioning mechanism positioned proximate the second end. The cross-tie positioning mechanism may include a stop member configured to prevent the movement of the cross-tie and a positioning rail positioned on a lateral side of the cross-tie conveyor. The cross-tie positioning mechanism may also include a positioning member configured to position the cross-tie against the positioning rail. The apparatus may also include at least two tie-plate positioning mechanisms, each configured to position at least one tie-plate on a cross-tie. The apparatus may also include a gauge positioned superior to the cross-tie positioning mechanism to hold the at least two tie-plates in position relative to one another as the at least two tie-plates are spiked.