Floating Elevator Brake Support to Prevent Roller Guide Compression
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Solution Overview
Problem
Existing elevator braking systems constrain the design of roller guides due to the fixed attachment of braking devices to the elevator car, leading to compression and reduced performance during braking operations.
Innovation Solution
A movable support member is integrated with the braking device, allowing it to float independently from the elevator car, which decouples the lateral movement of the braking device from the car, thereby avoiding compression of roller guides and enabling independent selection of roller guide designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the braking device is fixed to the elevator car, then the braking function is reliable, but the roller guides are compressed during braking operations
Solution Approach 1:
The support member is divided into a first portion received within the car upright opening and a second portion extending therefrom. The first portion allows lateral movement within the opening to accommodate braking device operation, while the second portion provides the mounting interface. This segmentation decouples the braking device lateral movement from the elevator car, preventing roller guide compression while maintaining braking reliability.
2Force
If the braking device is fixed to the elevator car, then the braking force is effectively applied, but the design of roller guides is constrained
Solution Approach 1:
The support member acts as an intermediary between the elevator car and the braking device. Its first portion received within the car upright opening provides a movable mounting interface that allows the braking device to operate independently. This intermediary structure enables effective braking force application while simultaneously providing design freedom for roller guides, as the braking device no longer directly constrains the car structure.
3Reliability
If the movable braking shoe is moved laterally and vertically towards the rail, then the braking device clamps the guide rail effectively, but the roller guides are compressed due to lateral movement
Solution Approach 1:
The support member's first portion is designed to move laterally within the car upright opening during braking operations. This dynamic capability allows the support member to accommodate the lateral movement required for effective braking without transmitting this movement to the elevator car structure. Consequently, the braking operation remains effective while the harmful compression of roller guides is eliminated.
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 solution prevents compression of roller guides during braking, reduces the complexity of the braking system, and allows for independent design of roller guides, enhancing the overall performance and reliability of the elevator system.
Implementation Method 1
The first inclined body surface is complementary to the first inclined opening surface and the first portion of the body is movable within the opening
Data Source
AI summary
A support member of a braking device includes a body configured to couple to the braking device. The body has a first portion including a first inclined body surface and a second inclined body surface. The first portion is receivable within an opening having a first inclined opening surface and second inclined opening surface. The first inclined body surface is complementary to the first inclined opening surface and the first portion of the body is movable within the opening.