High-Speed Train Anti-Collision Buffering Device

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Solution Overview

Problem

Current anti-collision buffering devices for high-speed trains rely on rigid long rods that are prone to instability and insufficient energy absorption due to limited buffer space, leading to inadequate protection against impact collisions.

Innovation Solution

An anti-collision buffering device with a hollow impacting and buffering body filled with a buffering medium, featuring a contacting pad, symmetrical contacting beams, and a cavity structure that expands and deforms to absorb energy, utilizing paraffin and paraffin oil in a solid-liquid mixed state to enhance energy absorption capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a rigid long rod is used for impact buffering, then the structure is simple and easy to manufacture, but the rod is prone to instability and break during impact, reducing energy absorption capacity

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces the rigid long rod with a flexible membrane structure that can deform elastically during impact. The membrane expands and contracts to absorb impact energy without breaking, solving the reliability issue while maintaining structural simplicity for manufacturing.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent changes the physical state of the buffering medium from solid (rigid rod) to fluid (gas or liquid) that can change volume and pressure dynamically. This allows the buffering system to adapt its stiffness during impact, improving reliability while keeping the overall structure simple.

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If the buffer space is limited due to tight connection between carriages, then the device structure is compact, but the energy absorption capacity is insufficient

Engineering Contradiction:

Improvebuffer spaceVSAvoidenergy absorption capacity

Core Design Contradiction:

Volume of moving objectVSLoss of energy

Solution Approach 1:

The flexible membrane can expand significantly within the limited buffer space, creating a large volume for energy absorption. The membrane's elasticity allows it to store and release energy efficiently, maximizing energy absorption capacity within the constrained volume.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent uses gas or liquid as the buffering medium within the membrane, utilizing pneumatic or hydraulic principles to absorb impact energy. The compressibility of the fluid allows for efficient energy absorption in a compact space, converting kinetic energy into potential energy of the compressed fluid.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Length of moving object

If the rigid long rod extension is limited to avoid instability, then the structure remains compact, but the compression of structural materials is affected and energy absorption tolerance is reduced

Engineering Contradiction:

Improverod extension lengthVSAvoidenergy absorption tolerance

Core Design Contradiction:

Length of moving objectVSLoss of energy

Solution Approach 1:

The flexible membrane can extend and deform without the stability issues of a rigid rod. It can achieve large deformation amplitudes within the same space, allowing the structural materials to be fully compressed and maximizing energy absorption tolerance without requiring longer extension.

Inventive Principle:

Principle #30Flexible shells and thin films

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 device significantly improves energy absorption capacity by allowing global tensile deformation, increasing the buffer tolerance and effectiveness in absorbing impact energy, thereby enhancing safety against collisions.

Implementation Method 1

the cavity structure expands and deforms to absorb energy, utilizing paraffin and paraffin oil in a solid-liquid mixed state to enhance energy absorption capacity

Methodology Applied

Scientific EffectEnergy absorption through deformation: Deformation

Implementation Method 2

utilizing paraffin and paraffin oil in a solid-liquid mixed state to enhance energy absorption capacity

Methodology Applied

Scientific EffectPhase change: Phase Change

Data Source

PatentUS12151720B1Anti-collision buffering device for high-speed train

Publication Date: 2024.11.26 TAIYUAN UNIVERSITY OF TECHNOLOGY

AI summary

An anti-collision buffering device for high-speed train is provided. The anti-collision buffering device for high-speed train includes: an impacting and buffering body, which is hollow to form a buffering cavity filled with buffering medium; a contacting pad is arranged at a front end of the impacting and buffering body, contacting beams are arranged at a rear end of the impacting and buffering body, one or more impacting and buffering bodies are arranged between two adjacent carriages of the high speed train, the buffering cavity is divided into three sub-cavities by separating plates, an inner buffering cavity at a middle and two outer buffering cavities at sides, an protruding cavity is arranged on the inner buffering cavity. The anti-collision buffering device for high-speed train has simple structure, relatively low manufacturing cost, and is feasible for practical production, and with practical significance.