Floating Frame Brake Guidance for Consistent Pad Wear
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Solution Overview
Problem
Existing electromechanical frame brakes suffer from limited torsional rigidity and housing rigidity, leading to non-uniform brake pad wear and varying force ratios of shear to normal forces, which results in inconsistent brake application paths over the life of the brake components.
Innovation Solution
The electromechanical frame brake incorporates a floating frame with a piston-receiving housing, lateral struts, and an outer crossmember, mounted via axial linear guides and a socket with a guide surface on the brake carrier, which provides additional axial guidance and improves housing rigidity by reducing tilting forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If axial linear guides are arranged away from the centre of gravity to compensate shear forces, then shear force compensation is improved, but tilting forces cause twisting and reduced housing rigidity
Solution Approach 1:
The patent applies asymmetry by strategically positioning the axial linear guides at specific locations that are not symmetrically distributed around the center of gravity. This asymmetric arrangement allows the guides to effectively counteract shear forces while minimizing the generation of tilting moments, thereby maintaining housing rigidity despite the non-symmetric configuration.
Solution Approach 2:
The patent introduces an additional guidance dimension by combining axial linear guides with a new guidance mechanism at the crossmember. This multi-dimensional guidance approach distributes the force compensation across different spatial dimensions, allowing the system to handle both shear forces and tilting forces more effectively without compromising housing rigidity.
2Stability of the object's composition
If components are dimensioned to increase housing rigidity, then twisting is reduced, but weight and installation space increase
Solution Approach 1:
The patent segments the guidance function into multiple independent components: axial linear guides for primary shear force compensation, and an additional guidance mechanism at the crossmember for secondary stabilization. This segmentation allows each component to be optimized for its specific function with minimal weight, rather than over-dimensioning the entire structure for maximum rigidity.
Solution Approach 2:
The patent introduces an intermediary guidance mechanism at the crossmember that acts as a mediator between the axial linear guides and the brake carrier. This intermediary element provides additional stabilization and reduces twisting without requiring significant increases in the dimensions or weight of the main frame brake components.
3Stability of the object's composition
If additional guidance mechanisms are added to improve housing rigidity, then brake application path consistency is improved, but device complexity increases
Solution Approach 1:
The patent designs the additional guidance mechanism at the crossmember to serve multiple functions: it provides secondary guidance to complement the axial linear guides, supports the crossmember structure, and helps distribute loads. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while still improving brake application path consistency.
Data Source
AI summary
An electromechanical frame brake is disclosed. The electromechanical frame brake comprises a floating frame assembled from a plurality of parts, and a brake piston, which can be moved axially by a spindle drive and is seated on a spindle of the spindle drive and guided in a piston-receiving housing. The floating frame has the piston-receiving housing, lateral struts, and an outer crossmember, which is connected via the struts to the piston-receiving housing. The crossmember carries an outer brake pad. The floating frame is mounted by way of axial linear guides in a brake carrier of the frame brake in such a way as to float and to be axially movable relative to the brake carrier. The brake carrier has a socket with a guide surface for the piston-receiving housing, which is mounted in an axially movable manner in said socket.