Rail Vehicle Device Carrier Fastening Bracket
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fastening methods for equipment carriers on steel-framed rail vehicles lack flexibility and safety, requiring extensive modifications for changes in container dimensions or positions, and do not prevent falling during vibrations or thermal expansion.
Innovation Solution
A fastening arrangement with a device carrier that includes equidistantly spaced vertical bores on longitudinal beams, using detachable fasteners and brackets with projections to secure the carrier, allowing easy repositioning and preventing detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If brackets are welded to steel sheet beams during vehicle development, then the container position is fixed, but any subsequent changes require extensive modifications including removing existing brackets, welding new brackets, rust protection and painting
Solution Approach 1:
The mounting system is segmented into separate components: the steel sheet beam with pre-drilled holes, removable brackets, and containers. This allows the beam structure to remain fixed while enabling flexible reconfiguration by simply moving the brackets and containers between different hole positions, eliminating the need for extensive welding modifications.
Solution Approach 2:
The holes are pre-drilled into the steel sheet beams during the vehicle manufacturing process, preparing the structure in advance for flexible mounting. This preliminary action enables later reconfiguration of container positions without requiring structural modifications, as the mounting points are already in place.
2Reliability
If traditional fastening methods are used, then the device carrier can be attached, but they do not prevent the carrier from falling off during vibrations, thermal expansion, or shunting impacts
Solution Approach 1:
The bracket design merges multiple functions into a single component: it provides the primary fastening connection through bolts, incorporates a retaining flange that overlaps with the fastener head to prevent detachment, and includes mounting holes for attachment to the beam. This integrated design enhances reliability without proportionally increasing complexity.
Solution Approach 2:
The retaining flange on the bracket acts as a preventive measure against detachment. By designing the bracket with this overlapping flange structure that extends beyond the fastener head, the system provides built-in protection against vibrations, thermal expansion, and shunting impacts before they can cause failure, ensuring the container remains secured under various stress conditions.
3Adaptability or versatility
If C-rails with integrated sliding nuts are used in lightweight metal vehicles, then the exact mounting position can be determined late in development and modified on service vehicles, but this method is not applicable to steel-framed vehicles
Solution Approach 1:
The bracket design serves multiple functions and can be universally applied to steel-framed vehicles: it attaches to pre-drilled holes in the beam, provides secure fastening with bolt connections, includes a retaining flange for vibration resistance, and enables flexible repositioning by moving between different hole locations. This universal design adapts the flexibility concept to steel-frame construction.
Data Source
Figure 1
Figure 2
AI summary
Fastening arrangement for a device carrier (1) on a rail vehicle, wherein the rail vehicle comprises at least one longitudinal beam (2) with a plurality of vertical bores arranged linearly and equidistantly on a horizontal projection (3) of the longitudinal beam, wherein a device carrier (1) is directly attached to at least one of the bores with releasable fasteners (4) and a bracket (5) is releasably attached to two further bores, wherein the bracket (5) encompasses a section of the device carrier (1) so that in the event of failure of the releasable fasteners (4) the device carrier (1) is held by the bracket (5), and wherein the bracket (5) has a projection (7) which prevents the releasable fasteners (4) of the device carrier (1) from falling off.