Segment Brake Dual Friction Face Torque Redundancy
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Solution Overview
Problem
Existing electromagnetic spring-loaded brakes engaging rotating elements, such as elevator systems, often lack sufficient braking torque and redundancy, particularly when engaging end faces, and have limited design flexibility in coil configuration.
Innovation Solution
The design introduces a pair of friction linings and an axially movable splined hub to create two friction faces, allowing for increased braking torque and redundancy by using either oval or circular coils, and distributing multiple brakes along the rotor's periphery for variable torque generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single friction lining is used in conventional brakes, then the structure is simple, but the braking torque is limited and redundancy is poor
Solution Approach 1:
The brake system is divided into two independent braking circuits, each with its own friction lining (right friction lining 6 and left friction lining 6). This segmentation allows one circuit to fail while the other continues to provide braking force, achieving redundancy without significantly increasing overall system complexity.
Solution Approach 2:
The patent transitions from a single-friction-face design to a dual-friction-face design by utilizing both sides of the rotor (right side and left side). This dimensional expansion from one face to two faces doubles the available braking surfaces and provides inherent redundancy.
2Power
If two friction linings are introduced to double braking torque, then reliability and torque are improved, but device complexity increases
Solution Approach 1:
The brake is segmented into two independent circuits (right circuit with right friction lining, left circuit with left friction lining), each capable of providing full braking torque independently. This segmentation doubles the effective braking capacity while maintaining manageable structural complexity through modular design.
Solution Approach 2:
Each friction lining is designed to be universally functional, capable of independently providing the full required braking torque. This multi-functionality ensures that either lining can operate alone or both can work together, maximizing braking power while keeping the structure adaptable and not overly complex.
3Adaptability or versatility
If multiple brakes are distributed along the rotor periphery, then variable torque generation is achieved, but device complexity increases
Solution Approach 1:
The brake system incorporates dynamic controllability by distributing multiple brakes along the rotor periphery, allowing selective activation of different brake units. This enables variable torque generation to match different operational requirements, achieving adaptability while managing complexity through modular, independently controllable units.
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 configuration doubles the original braking torque, provides redundancy with independent brake operation, and allows for flexible coil design, ensuring continued operation even if one brake fails, with the option to vary torque by activating multiple brakes.
Implementation Method 1
an electromagnetic coil 2, which is potted inside coil carrier 1, attracting (when energized) armature disc 4 across an air gap 13
Implementation Method 2
against the pressure exerted by compression spring 3
Implementation Method 3
Whenever coil 2 is deenergized, compression springs 3 urge armature disc 4 against rotor 5 with its two friction linings 6
Data Source
AI summary
The invention relates to a mounting of one or more electromagnetically bleeding spring-loaded brakes (a, b) on a machine wall or the like. The invention is characterized in that the brakes are, while distributed over the periphery on the face, act upon an axially moving brake rotor (5) with continuous friction linings (6) on both sides (i.e. left and right), whereby braking (left) surface of the friction lining (6) and on the opposite side with the armature discs of the brakes on the second (right) friction lining (6).