Gantry Binary Synchronization Brake for Elevator Safety
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Solution Overview
Problem
Existing electromagnetic block-type brakes face issues with brake failure due to accidental failure 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 with a fixed gantry bracket, dual brake releaser, braking arms, and a gap adjustment mechanism, allowing for independent braking units and easy gap adjustment, enhancing reliability and versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a movable frame with four-linkage rods is used for the brake frame in cranes, then the brake structure can be assembled, but the gap between braking shoes and braking wheel becomes very difficult to adjust, requiring specialized maintenance staff and leading to uneven wear of friction linings
Solution Approach 1:
The brake assembly is segmented into independent adjustable components. The brake shoe assembly can be independently adjusted relative to the braking wheel through separate adjustment mechanisms for each brake shoe, allowing precise gap control without requiring complex frame disassembly or specialized maintenance staff.
2Stability of the object's composition
If the brake frame is fixedly connected to the driving motor housing, then the brake structure is stable, but motor manufacturers must design and manufacture a mounting platform, requiring design cooperation and reducing versatility
Solution Approach 1:
The brake assembly is designed as a universal unit that can be mounted on various driving motor housings without requiring custom mounting platforms. The standardized mounting interface allows the same brake assembly to be used in both elevator tractors and cranes, eliminating the need for design cooperation between brake and motor manufacturers while maintaining structural stability through rigid fixed connection.
3Device complexity
If the braking spring is part of the overall braking unit, then the brake structure is compact, but accidental breakage of the braking spring causes complete brake failure and severe security accidents
Solution Approach 1:
The braking system is segmented into two independent braking units, each with its own braking spring, braking shoes, and actuation mechanism. This segmentation ensures that failure of one unit (including braking spring breakage) does not cause complete brake failure, as the other independent unit can still provide braking function, thereby eliminating severe security accidents while maintaining compact overall structure.
4Ease of operation
If a double push electromagnet is installed on the housing of the driving motor, then the brake can be actuated, but manufacturers must design in cooperation with motor manufacturers and the products have limited uses with no versatility
Solution Approach 1:
The brake assembly with double push electromagnet is designed as a universal actuation unit that can be mounted on various driving motor housings without requiring custom integration. The standardized mounting platform and electromagnet interface allow the same brake assembly to be used in both elevator tractors and cranes, eliminating the need for design cooperation between manufacturers while maintaining ease of brake actuation.
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 solution eliminates the need for design cooperation between brake and motor manufacturers, improves brake reliability by enabling continued operation even if one braking unit fails, and allows for interchangeable use between elevator tractors and cranes, reducing security risks and enhancing operational reliability.
Implementation Method 1
a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously
Implementation Method 2
braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking
Implementation Method 3
braking shoes connected to the braking arms for frictionally braking a braking wheel
Data Source
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.