Railcar Bogie Support Structure with Flush Alignment Indicators
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Solution Overview
Problem
The existing support structure for railcar bogies faces challenges in ensuring proper attachment of the pressing fixture to the receiving seat, particularly due to the difficulty in measuring equal axial forces and confirming horizontal alignment without adequate space, leading to low working efficiency and potential inclination issues.
Innovation Solution
A support structure for railcar bogies featuring a receiving seat with recesses and a pressing member, where fasteners are used to sandwich the core rod, allowing for easy confirmation of horizontal alignment by ensuring flush end portions, thereby facilitating balanced axial forces without direct measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the pressing fixture is located close to the wheel to support the core rod, then the structural compactness is improved, but the ease of operation deteriorates due to inadequate space for confirmation work
Solution Approach 1:
The patent introduces an intermediary indicator (such as a mark or reference feature) on the pressing fixture that mediates the alignment confirmation process. This indicator allows workers to verify proper installation without needing direct access to the fixture, thus resolving the contradiction between compact structure and ease of operation
Solution Approach 2:
The patent replaces the mechanical confirmation method (using clearance gauges requiring direct access) with a visual indication system. This substitution eliminates the need for physical measurement tools and direct access to the fixture, maintaining compact structure while improving ease of operation
2Measurement precision
If clearance gauge method is used to confirm horizontal attachment, then the measurement precision is improved, but the productivity deteriorates due to low working efficiency
Solution Approach 1:
The pressing fixture is designed with self-indicating features (such as visual marks or reference surfaces) that automatically show whether proper alignment has been achieved. This eliminates the need for separate measurement operations with clearance gauges, maintaining measurement precision while dramatically improving productivity by making the fixture self-verifying
Solution Approach 2:
The patent employs visual indicators (such as colored marks or contrasting surfaces) on the pressing fixture that provide immediate visual feedback on alignment status. This color or visual change system allows rapid confirmation of proper installation without detailed measurement, improving both precision and productivity
Data Source
AI summary
A support structure of a railcar bogie and a method of supporting a railcar bogie each of which is capable of easily managing axial force acting on a fastener between a pressing member and a main body sandwiching a shaft body. In the support structure of the railcar bogie, the pressing member and the main body are fastened to each other such that a clearance is formed between the pressing member and the main body. The support structure is configured such that a car upper-lower direction end portion, located around a first recess of the main body, of the main body and a car upper-lower direction end portion of the pressing member are substantially flush with each other.