Gantry Binary Synchronization Block-Type Brake for Elevator Safety
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Solution Overview
Problem
Existing electromagnetic block-type brakes face issues with brake failure due to accidental breakage of the braking spring and difficulty in adjusting the gap between braking shoes and the braking wheel, leading to potential security risks and limited versatility across different applications.
Innovation Solution
A gantry binary synchronization block-type brake design featuring a fixed gantry bracket with adjustable braking arms, a dual brake releaser, and a gap adjustment mechanism, allowing for independent braking units and easy assembly, which enhances reliability and versatility by enabling interchangeable use between elevator tractors and cranes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a movable frame structure is used for the brake frame, then the brake can be assembled, but the gap between braking shoes and braking wheel becomes very difficult to adjust
Solution Approach 1:
The patent employs a movable frame structure that allows dynamic adjustment of the gap between braking shoes and braking wheel. The frame can be positioned at different locations along the braking wheel circumference, enabling maintenance staff to adjust the gap according to actual wear conditions without requiring complex disassembly or specialized tools.
2Device complexity
If the braking spring is part of the overall braking unit, then the structure is compact, but accidental breakage causes complete brake failure
Solution Approach 1:
The patent divides the braking system into two independent braking units, each with its own braking spring and braking shoes. This segmentation ensures that if one braking spring breaks, the other braking unit remains functional, providing backup braking capability and preventing complete brake failure.
Solution Approach 2:
The patent implements a safety mechanism where the second braking unit serves as a pre-prepared backup system. In the event of spring breakage in one unit, the other unit is already in place and can immediately take over the braking function, cushioning against the harmful effect of complete brake failure.
3Manufacturing precision
If a fixed gantry bracket is used, then assembly precision is improved, but manufacturing complexity increases
Solution Approach 1:
The fixed gantry bracket is designed with self-positioning features that allow it to automatically align and secure components during assembly. The bracket structure includes built-in reference surfaces and locating features that guide the positioning of braking arms and shoes, achieving high assembly precision without requiring complex external jigs or specialized assembly tools.
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
The design eliminates the need for cooperative manufacturing with motor manufacturers, improves assembly precision, and ensures continued braking functionality even if one braking unit fails, reducing security risks and enhancing operational reliability.
Implementation Method 1
braking shoes connected to the braking arms for frictionally braking a braking wheel
Implementation Method 2
a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously
Data Source
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AI summary
The present invention is implemented by a gantry binary synchronization block-type brake, which comprises: a gantry bracket comprised by a fixedly connected door-shaped frame; braking arms arranged on both sides of the gantry bracket with lower ends of the braking arms hinged to the gantry bracket; braking shoes connected to the braking arms for frictionally braking a braking wheel; a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously; braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking; and a gap adjustment mechanism for adjusting a working gap between the braking shoes and the braking wheel. According to the present invention, the security risks in an elevator tractor or crane can be eliminated, the gap adjustment approach is simple, and reliability and versatility of an operation are considerably enhanced.