Trailing Module for Railway Switch Machine Actuator
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Solution Overview
Problem
Existing railway switch machines lack the ability to easily integrate new modules, particularly for trailing functions, which limits their adaptability and functionality.
Innovation Solution
A trailing module for a switch machine with a linear actuator and a dual-operation trailing mechanism, allowing for flexible connection to a driving bar and enabling easy integration with a stabilization module for secure positioning, allowing the switch machine to be configured for both trailable and non-trailable modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular architecture is implemented in the switch machine, then adaptability and ease of adding new modules is improved, but the device complexity increases
Solution Approach 1:
The switch machine is divided into modular components including a housing, linear actuator, trailing module with first and second members, and stabilization module. Each module can be independently manufactured, tested, and replaced, improving adaptability while managing complexity through standardized interfaces.
Solution Approach 2:
The housing is designed with universal interfaces that can accommodate different module configurations. The same housing structure supports both trailing modules for flexible switches and stabilization modules for rigid switches, allowing one component to serve multiple functions across different switch types.
2Ease of operation
If a trailing mechanism with sliding areas is used to enable flexible connection, then ease of operation is improved, but the device complexity increases
Solution Approach 1:
Sliders act as intermediary elements between the first and second members, enabling smooth relative movement along the sliding areas. These sliders facilitate the trailing action without requiring complex mechanical linkages, maintaining ease of operation while managing complexity through simple geometric surfaces.
Solution Approach 2:
The sliding areas are designed with specific geometric parameters including first and second portions at different distances from the second member. By carefully designing these geometric parameters, the mechanism achieves the desired trailing motion characteristics without requiring active control systems, maintaining simplicity.
3Reliability
If a biasing device is added to push the intermediate member away from the second member, then reliability is improved through secure positioning, but the device complexity increases
Solution Approach 1:
The biasing device pre-loads the intermediate member against the second member, creating a predetermined force that ensures reliable engagement before any trailing action occurs. This pre-positioning prevents loose fits and ensures consistent operation, improving reliability through advance preparation rather than complex active control.
4Adaptability or versatility
If the slider is designed to transition between first and second portions of the sliding area, then adaptability is improved for different operation modes, but manufacturing precision requirements increase
Solution Approach 1:
The slider is designed to dynamically transition between two distinct positions along the sliding area, corresponding to engaged and disengaged states. The geometric design of the sliding areas ensures that the slider naturally settles into stable positions, providing adaptability for different operation modes while relying on geometric constraints rather than precision active control to maintain positioning accuracy.
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
Enables easy addition of trailing functionality to switch machines, ensuring secure end-of-stroke positions and compensation for minor mechanical stresses, while allowing users to dynamically enable or disable trailing functions, enhancing adaptability and maintainability.
Implementation Method 1
a biasing device arranged between the second member and an intermediate member adapted to push the intermediate member away from the second member in a trailing direction in parallel to the movement direction of the linear actuator
Implementation Method 2
the intermediate member comprises at least one slider adapted to slide on the sliding area and which is biased against the sliding area
Data Source
Figure 1~2
Figure 3
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AI summary
The present invention relates to a trailing module for a switch machine (1) of a railway switch having two blades connected to a driving bar (8), the switch machine comprising a linear actuator (5) adapted to linearly move between a first position and the second position, the trailing module (16) comprising: a first member (19, 21), and a second member (19, 21), wherein the first member (19, 21) being movably connected to the second member (19, 21) via at least one trailing mechanism (30a, 30b), each trailing mechanism comprising at least one linear sliding area (34a, 34b) at the first member, a biasing device (40a, 40b) arranged between the second member (19, 21) and an intermediate member (42a, 42b) adapted to push the intermediate member (42a, 42b) away from the second member in a trailing direction (32a, 32b) in parallel to the movement direction of the linear actuator (5), wherein the intermediate member comprises at least one slider (46a, 46b) adapted to slide on the sliding area and which is biased against the sliding area (34a, 34b), wherein the sliding area has a first portion (36a, 36b) with a first distance (d1) and a second portion (38a, 38b) with a second distance with respect to the second member (19, 21), wherein the second distance (d2) is closer to the second member than the first distance (d1).