Rail Transit Turnout With Rotating And Moving Beams

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Solution Overview

Problem

Existing turnout structures in rail transit technologies are bulky, heavy, and inflexible due to the use of a single, integrated movable beam, which limits their size, weight, and movement flexibility.

Innovation Solution

The proposed turnout structure incorporates a fixed beam set with two movable beam sets, each comprising a rotating beam and a moving beam, allowing for the creation of multiple switchable traveling pathways without the need for a large, single movable beam.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a single integrated movable beam is used in the turnout structure, then the structural strength and stability are improved, but the size increases, weight increases, and movement flexibility deteriorates

Engineering Contradiction:
Improvestructural strengthVSAvoidmovable beam weight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent divides the single integrated movable beam into multiple separate movable beams (first movable beam, second movable beam, etc.), each capable of independent movement. This segmentation reduces the weight of each individual beam while maintaining the overall structural strength through coordinated operation of multiple beams. The movable beam set comprises multiple beams that work together to achieve the switching function.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If a single integrated movable beam is used in the turnout structure, then the structural stability is improved, but the movement flexibility deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidmovement flexibility
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent introduces a movable beam set comprising multiple movable beams that can dynamically adjust their positions independently. Each movable beam can be controlled to move between different positions (first position, second position, third position) to define various traveling pathways. This dynamic configuration allows the turnout structure to adapt to different routing requirements while maintaining stability through controlled positioning mechanisms.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If a single integrated movable beam is used in the turnout structure, then the switching function is achieved, but the device complexity and size increase

Engineering Contradiction:
Improveswitching functionVSAvoidturnout structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent segments the turnout structure into multiple independent movable beam sets, where each set contains multiple movable beams that can operate semi-independently. This segmentation simplifies the overall control system compared to moving a single large integrated beam, as each smaller beam requires less force and can be controlled by smaller actuators. The first movable beam set and second movable beam set can be controlled separately to achieve different routing configurations.

Inventive Principle:
Principle #1Segmentation

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

This design results in a turnout structure that is smaller in size, lighter in weight, and more flexible in movement, while maintaining the ability to define multiple traveling pathways, thus improving the efficiency and reliability of rail transit systems.

Implementation Method 1

A rotating center is located on a first end of the rotating beam, 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

PatentUS20250075437A1Turnout and rail transit system
Publication Date: 2025.03.06 BYD CO LTD
  • US20250075437A1 patent drawing
  • US20250075437A1 patent drawing
  • US20250075437A1 patent drawing

AI summary

A turnout structure includes at least one turnout. The at least one turnout includes: a fixed beam set including a first side beam and a second side beam, and at least two movable beam sets disposed between the first side beam and the second side beam to define at least three switchable traveling pathways. Top surfaces of the at least two movable beam sets are configured to be a first traveling surfaces for traveling wheels of a rail vehicle to travel. Each of the at least two movable beam sets includes a rotating beam and a moving beam. A rotating center is located on a first end of the rotating beam, 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.