Railway Switch Locking Device Segmented Support for Fur Replacement
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Solution Overview
Problem
The existing railway switch locking devices require complex and labor-intensive processes for replacing the sliding fur, which is a wearing part, as it is trapped between the support and the locking arm, necessitating the dismantling of the locking arm for removal and reassembly.
Innovation Solution
Decomposing the support into a fixed support part and a removable blocking part allows the sliding fur to be released laterally, eliminating the need for dismantling the locking arm, enabling easier replacement by sliding it out along its longitudinal axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support is made as a one-piece structure, then the structural strength and stability are improved, but the maintenance complexity and time increase due to the need to dismantle the locking arm for fur replacement
Solution Approach 1:
The support is divided into two distinct parts: a fixed support part that remains permanently installed and provides structural strength, and a removable blocking part that can be easily detached for maintenance. This segmentation allows the fur to be accessed and replaced without dismantling the entire locking arm assembly, thus resolving the contradiction between structural integrity and ease of repair.
2Ease of manufacture
If the support is made as a one-piece structure, then the manufacturing simplicity is improved, but the maintenance time and labor effort increase
Solution Approach 1:
By segmenting the support into a fixed part and a removable blocking part, the design accepts slightly increased manufacturing complexity in exchange for dramatically reduced maintenance time. The blocking part can be quickly removed and replaced during routine maintenance, eliminating the need for time-consuming disassembly and reassembly operations.
Solution Approach 2:
The support structure transitions from a static one-piece design to a dynamic modular design where the blocking part can be selectively removed and reinstalled. This dynamic capability allows the system to adapt between operational mode (with blocking part installed for strength) and maintenance mode (with blocking part removed for fur replacement), resolving the time loss contradiction.
3Stability of the object's composition
If the fur is trapped between the support and locking arm, then the structural stability is improved, but the ease of operation for fur replacement deteriorates
Solution Approach 1:
The support is segmented into a fixed support part that maintains structural stability and a removable blocking part that controls fur positioning. During maintenance, the blocking part is removed to allow fur extraction, then reinstalled to restore the trapping configuration. This resolves the contradiction by providing temporal separation between operational stability and maintenance accessibility.
Solution Approach 2:
The blocking part is extracted from the permanent structure, allowing the fur to be accessed and removed from the trapping configuration during maintenance. After fur replacement, the blocking part is returned to restore the original stable configuration. This extraction principle enables easy operation during maintenance while preserving structural stability during normal operation.
Data Source
Figure 1~2
Figure 3~5
AI summary
The device has a fixed part integrated into a stock rail, and a movable part movable with respect to the fixed part. A slide filler bar (5) is arranged on a support (4), where the support comprises an elongated shaped support part (41). A blocking part (42) is distinct from the support part, and extends a contact surface of the support part to longitudinal ends of the support part. The blocking part and the support part are integrated with respect to each other by their frontal faces.