Railcar Interior Equipment Installation Structure with Adjustable Mounting
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Solution Overview
Problem
Existing interior equipment installation structures for railcars face challenges in accurately and efficiently installing heavy equipment due to manufacturing tolerances in the car body shell, requiring complex and time-consuming adjustment processes, and previous solutions either lack sufficient adjustability or increase the number of parts, complicating the installation process.
Innovation Solution
An interior equipment installation structure featuring a first installation member mounted to the roof body shell with adjustable second installation members, allowing vertical position adjustments, which simplifies the installation of car interior equipment by reducing the need for individual piece adjustments and minimizing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adjustment spacers are provided between installation members and car interior equipment to absorb tolerance, then manufacturing precision is improved, but device complexity increases and installation time increases
Solution Approach 1:
The patent combines the installation member and adjustment mechanism into a single integrated structure. The installation member includes an adjustment portion with through-holes at different positions, allowing the same component to perform both installation and tolerance adjustment functions, thereby reducing the number of separate parts while maintaining installation accuracy
Solution Approach 2:
The installation member incorporates a movable adjustment portion that can be repositioned along the installation member's length. This dynamic capability allows the adjustment portion to be shifted to different through-holes to compensate for manufacturing tolerances, achieving precise installation without requiring multiple separate adjustment components
2Manufacturing precision
If adjustment spacers are provided between installation members and car interior equipment to absorb tolerance, then manufacturing precision is improved, but installation time increases
Solution Approach 1:
The adjustment portion is pre-integrated into the installation member during manufacturing, with multiple through-holes positioned at predetermined intervals. This preliminary preparation eliminates the need for complex on-site adjustments, as workers only need to select and position the appropriate through-hole, significantly reducing installation time while maintaining precision
3Strength
If dedicated installation members are used for respective pieces of car interior equipment with sufficient stiffness, then strength is improved, but adaptability decreases
Solution Approach 1:
The installation member incorporates a movable adjustment portion that can be repositioned to different locations along the member's length. This dynamic adjustment capability allows the same rigid installation member to adapt to varying manufacturing tolerances while maintaining sufficient stiffness for supporting heavy equipment
Solution Approach 2:
The installation member is designed with multi-functionality, serving both as a structural support element and as an adjustable positioning device. The integration of the adjustment portion with different through-holes enables a single component to handle multiple installation scenarios and tolerance conditions, reducing the need for multiple specialized installation members
Data Source
AI summary
In the interior equipment installation structure for a railcar according to the present invention, a first installation member is mounted to a roof body shell along the car longitudinal direction or the car width direction. Second installation members are attached to the first installation member using mechanical fastening tools such as bolts with the positions of the second installation members adjusted in the up-down direction of the car. The second installation members are used for installing lighting appliances such as fluorescent lights, each has a size corresponding to each of the lighting appliances, and are continuously installed. There are portions in which plate members are overlapped with each other between respective adjacent ones of the second installation members, and hand strap receivers are installed in these portions.