Rail Brake Lining Carrier Plate Depression for Heat Dissipation

Solution Overview

Problem

Existing brake linings for high-speed vehicles face limitations in heat dissipation and structural deformation, leading to reduced load-bearing capacity and shorter service life, especially during high-speed braking operations.

Innovation Solution

The brake lining incorporates a depression in the carrier plate, configured as a ball socket or with cooling fins, to increase the heat dissipation area, which can be freely dimensioned and shaped, and optionally coated for improved heat management, allowing for greater flexibility and rigidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the brake lining uses a conventional solid carrier plate design, then the structural strength is maintained, but the heat dissipation capability is insufficient leading to overheating during high-speed braking

Engineering Contradiction:

Improveheat dissipation capabilityVSAvoidstructural strength

Core Design Contradiction:

TemperatureVSStrength

Solution Approach 1:

The carrier plate is segmented by introducing multiple through-going depressions that divide the solid structure into separated regions. These depressions create distinct thermal zones while maintaining structural integrity through the remaining material bridges, enabling improved heat dissipation without compromising overall strength

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The carrier plate is transformed from a solid homogeneous structure to a porous-like structure with multiple through-going depressions. This porous configuration increases the surface area for heat dissipation and creates channels for heat flow, significantly improving thermal management while the remaining material maintains structural strength

Inventive Principle:

Principle #31Porous materials

2Duration of action of stationary object

If the carrier plate uses a conventional solid design, then the manufacturing process is simple, but the service life is reduced due to thermal degradation and deformation

Engineering Contradiction:

Improveservice lifeVSAvoidmanufacturing complexity

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The carrier plate is segmented by introducing multiple through-going depressions that divide the solid structure into separated regions. These depressions create distinct thermal zones while maintaining structural integrity through the remaining material bridges, enabling improved heat dissipation without compromising overall strength

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The physical parameters of the carrier plate are changed by introducing depressions with specific geometric characteristics (depth, diameter, spacing). These parameter changes optimize the thermal management properties and structural performance, extending service life while maintaining manufacturability through standard forming processes

Inventive Principle:

Principle #35Parameter changes

3Speed

If the brake lining operates at high speeds with frequent braking, then the braking performance is maintained, but the heat accumulation leads to deformation of the carrier plate and lining carrier

Engineering Contradiction:

Improvebraking performance at high speedVSAvoidstructural stability against deformation

Core Design Contradiction:

SpeedVSStability of the object's composition

Solution Approach 1:

The carrier plate is transformed from a solid homogeneous structure to a porous-like structure with multiple through-going depressions. This porous configuration increases the surface area for heat dissipation and creates channels for heat flow, significantly improving thermal management while the remaining material maintains structural strength

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The heat dissipation approach moves from a two-dimensional surface cooling to a three-dimensional volumetric cooling structure. The through-going depressions create internal cooling channels that allow heat to be dissipated from multiple dimensions, enhancing the ability to manage thermal loads during high-speed braking operations

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 enhances heat dissipation, increasing the brake lining's load-bearing capability and service life, reducing operational costs and downtime, while maintaining cost-neutrality and compatibility with high-speed applications.

Implementation Method 1

its ability to be used is improved with low structural and production outlay and its service life is increased. Disclosed embodiments achieve a situation where a greater radiation area is provided, via which more heat is dissipated to the surroundings

Methodology Applied

Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 2

the frictional heat being conducted into the lining carrier via the friction element/carrier plate contact and the carrier plate/lining carrier bearing region

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS9206865B2Brake lining for a partially lined disc brake

Publication Date: 2015.12.08 KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH

AI summary

A brake lining for a partially lined disc brake, in particular of a rail vehicle, with lining elements which are connected on a lining carrier and of which each has a carrier plate and friction elements which are fastened to the carrier plate and lie on the rear side in receptacles, wherein the carrier plate is held on the lining carrier such that the carrier plate can be moved in a tilting manner, is configured in such a way that at least one depression which increases the surface area of the carrier plate is provided in the carrier plate, adjacent to the receptacles.