Synchronized Braking System for Elevator Safety
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Summary
Problems
Conventional elevator safety systems with a single braking surface are inadequate for large or high-speed machines, requiring additional braking surfaces that must be synchronized to ensure durability and performance.
Innovation solutions
A selectively operable braking device with a safety brake and engagement mechanism comprising bar pinions and magnetic brake pads, where movement of one magnetic brake pad synchronizes the engagement of others, utilizing electromagnetic actuators controlled by a controller to manage the braking action.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If additional braking surfaces are added to handle large machines and elevated speeds, then braking capacity is improved, but synchronization between braking surfaces becomes difficult to maintain
Why choose this principle:
Multiple electromagnetic actuators are mechanically coupled through a common mounting plate and shared magnetic circuit, merging their operation into a unified system where actuation of one automatically actuates all others, ensuring synchronized braking action across multiple braking surfaces
Principle concept:
If additional braking surfaces are added to handle large machines and elevated speeds, then braking capacity is improved, but synchronization between braking surfaces becomes difficult to maintain
Why choose this principle:
The common mounting plate and shared magnetic circuit serve multiple functions: providing mechanical support for multiple actuators, establishing a common magnetic flux path, and ensuring simultaneous actuation of all braking surfaces through a single control signal
Application Domain
Data Source
AI summary:
A selectively operable braking device with a safety brake and engagement mechanism comprising bar pinions and magnetic brake pads, where movement of one magnetic brake pad synchronizes the engagement of others, utilizing electromagnetic actuators controlled by a controller to manage the braking action.
Abstract
A selectively operable braking device for an elevator system. The braking device includes a safety brake adapted to be wedged against a guide rail when moved from a non-braking state into a braking state. Also included is an engagement mechanism moveable between an engaged position and a non-engaged position, the engagement mechanism comprising bar pinions each having teeth and connected to at least one of the other bar pinions with a meshed engagement of the teeth, the engagement mechanism configured to move the safety brake between the non-braking state and braking state when the engagement mechanism moves between the non-engaged position and the engaged position. Further included is a plurality of magnetic brake pads, each of the brake pads coupled to one of the bar pinions, wherein movement of one of the brake pads into the engaged position causes movement of the other magnetic brake pads into the engaged position.