Rail Turnout Movable Beam Segmentation

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Solution Overview

Problem

Existing turnout structures in rail transit systems are large in size, heavy in weight, and inflexible due to the use of integrated movable beams, which complicates switching between different driving channels.

Innovation Solution

The proposed turnout structure incorporates a movable beam set composed of a rotating beam and a moving beam, which are pivotally connected, allowing for shape change and flexible movement. This design reduces the size, weight, and complexity of the movable beam set compared to traditional integrated beams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an integrated movable beam is used in the turnout structure, then the beam provides structural support for switching between driving channels, but the beam becomes large in size, heavy in weight, and inflexible to move

Engineering Contradiction:
Improvestructural support capabilityVSAvoidmovable beam weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The integrated movable beam is divided into two separate components: a rotating beam that pivots on a rotating center and a moving beam that translates along a guide rail. This segmentation allows each component to be smaller and lighter while collectively providing the same structural support function for channel switching.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a static integrated beam to a dynamic mechanism where the rotating beam pivots around a rotating center and the moving beam translates along a guide rail. This dynamic configuration enables more flexible movement and reduces the overall size and weight requirements compared to a static integrated structure.

Inventive Principle:
Principle #15Dynamics

2Reliability

If an integrated movable beam is used in the turnout structure, then the beam provides structural support for switching between driving channels, but the beam becomes large in size, heavy in weight, and inflexible to move

Engineering Contradiction:
Improvestructural support capabilityVSAvoidmovable beam length
Core Design Contradiction:
ReliabilityVSLength of moving object

Solution Approach 1:

The integrated movable beam is divided into two separate components: a rotating beam that pivots on a rotating center and a moving beam that translates along a guide rail. This segmentation allows each component to be smaller and lighter while collectively providing the same structural support function for channel switching.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a static integrated beam to a dynamic mechanism where the rotating beam pivots around a rotating center and the moving beam translates along a guide rail. This dynamic configuration enables more flexible movement and reduces the overall size and weight requirements compared to a static integrated structure.

Inventive Principle:
Principle #15Dynamics

3Reliability

If an integrated movable beam is used in the turnout structure, then the beam provides structural support for switching between driving channels, but the beam becomes large in size, heavy in weight, and inflexible to move

Engineering Contradiction:
Improvestructural support capabilityVSAvoidflexibility to move
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The integrated movable beam is divided into two separate components: a rotating beam that pivots on a rotating center and a moving beam that translates along a guide rail. This segmentation allows each component to be smaller and lighter while collectively providing the same structural support function for channel switching.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a static integrated beam to a dynamic mechanism where the rotating beam pivots around a rotating center and the moving beam translates along a guide rail. This dynamic configuration enables more flexible movement and reduces the overall size and weight requirements compared to a static integrated structure.

Inventive Principle:
Principle #15Dynamics

4Weight of moving object

If a movable beam set with rotating beam and moving beam is used, then the structure becomes smaller and lighter, but the device complexity increases

Engineering Contradiction:
Improvemovable beam weightVSAvoidmovable beam set complexity
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

A connecting component is introduced between the rotating beam and the moving beam to coordinate their relative movements. This intermediary element simplifies the overall system by providing a clear mechanical linkage that ensures proper coordination between the two components, reducing the complexity that would otherwise arise from coordinating independent movements.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system uses a rotating beam that pivots on a rotating center combined with a moving beam that translates along a guide rail. This dynamic mechanism, while more complex than a static integrated beam, provides significant reductions in size and weight while enabling flexible channel switching operation.

Inventive Principle:
Principle #15Dynamics

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

The new turnout structure is smaller, lighter, and more flexible, enabling efficient switching between driving channels while reducing manufacturing difficulties and overall system volume.

Implementation Method 1

the rotating beam is configured to rotate around the rotating center

Methodology Applied
Scientific EffectRotation:

Implementation Method 2

the moving beam is connected to a second end of the rotating beam and configured to move along a path

Methodology Applied
Scientific EffectLinear motion:

Data Source

PatentUS20250075438A1Turnout, crossover turnout, and rail transit system
Publication Date: 2025.03.06 BYD CO LTD
  • US20250075438A1 patent drawing
  • US20250075438A1 patent drawing
  • US20250075438A1 patent drawing

AI summary

A turnout structure, which includes at least one turnout. The at least one turnout includes a fixed beam set. The fixed beam set includes a first side beam and a second side beam. The at least one turnout further includes a movable beam set. The movable beam set is disposed between the first side beam and the second side beam to define two switchable driving channels. A top surface of the movable beam set is configured as a first locomotion surface for locomotion wheels of a railway vehicle. The movable beam set includes a rotating beam and a moving beam. A first end of the rotating beam includes a rotating center. The rotating beam is configured to rotate around the rotating center, and the moving beam is connected to a second end of the rotating beam and configured to move along a path.