Rail Vehicle Suspension System Multi-Directional Damping

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Solution Overview

Problem

Existing rail vehicle suspension systems fail to achieve multi-directional balance, specifically in up-and-down, left-and-right, and front-and-rear directions, leading to instability and vibration during travel.

Innovation Solution

A suspension system comprising a vehicle body connecting seat, an elastic component, a transverse damper, and a vertical damper, all connected in a manner that ensures stability in multiple directions, with the elastic component, transverse damper, and vertical damper working together to provide damping and buffering effects, reducing vibration and noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a conventional suspension system is used, then the structure is simple, but the vehicle body cannot achieve multi-directional balance and stability

Engineering Contradiction:

Improvevehicle body stabilityVSAvoidsuspension system complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The suspension system is divided into multiple independent functional components: elastic components (for vertical support), transverse dampers (for left-right damping), and vertical dampers (for front-rear damping). Each component addresses a specific directional stability requirement, allowing the system to achieve multi-directional balance through coordinated action of segmented elements rather than a single complex mechanism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention transitions from conventional single-direction or two-direction suspension to three-dimensional multi-directional suspension by adding both transverse and vertical dampers that operate in perpendicular directions. This dimensional expansion allows the system to control vehicle body motion in up-and-down, left-and-right, and front-and-rear directions simultaneously, achieving comprehensive stability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If the suspension system adds multiple dampers and elastic components for multi-directional balance, then the stability improves, but the device complexity increases

Engineering Contradiction:

Improvemulti-directional balanceVSAvoidnumber of components

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The vehicle body connecting seat serves as a universal mounting platform that integrates multiple connection points for elastic components, transverse dampers, and vertical dampers. This multi-functional component consolidates what would otherwise be separate mounting structures, reducing overall system complexity while maintaining the capability to support multiple dampers and elastic elements for comprehensive multi-directional control.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If conventional suspension systems are used, then the structure is simple, but vibration and noise during travel cannot be effectively reduced

Engineering Contradiction:

Improvevibration and noiseVSAvoidsuspension system structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The invention converts the harmful vibrations and noises into controlled energy dissipation through the damping mechanisms. The transverse and vertical dampers are specifically designed to convert unwanted vibrational energy into thermal energy through friction and viscous resistance, effectively reducing harmful factors while maintaining system complexity at an acceptable level.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The elastic components and dampers are pre-configured in the suspension system to provide cushioning effects before vibrations and shocks occur. The elastic components store potential energy during compression, while the dampers are positioned to immediately counteract incoming vibrations, providing beforehand protection against harmful factors rather than reacting after damage occurs.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 suspension system effectively stabilizes the rail vehicle in all directions, reducing vibration and noise, and enhancing the overall travel stability and comfort by ensuring balance and damping effects.

Implementation Method 1

an elastic component (420), the vehicle body connecting seat (410) is positioned above the elastic component (420) and is connected to the elastic component (420)

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a transverse damper (430) and a vertical damper (440), the transverse damper (430) and the vertical damper (440) are respectively hinged to the vehicle body connecting seat (410) and are perpendicular to each other

Methodology Applied

Scientific EffectDamping: Damping

Data Source

PatentUS11414106B2Suspension system, bogie assembly with same, and rail vehicle

Publication Date: 2022.08.16 BYD CO LTD

AI summary

An apparatus includes a suspension system, a bogie frame with the same, and a rail vehicle. The suspension system includes a vehicle body connecting seat, an elastic component, a transverse damper and a vertical damper. The vehicle body connecting seat is positioned above the elastic component and is connected to the elastic component, and the transverse damper and the vertical damper are respectively hinged to the vehicle body connecting seat and are perpendicular to each other.