Electromagnetic Brake Release in Confined Shaft Spaces
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Solution Overview
Problem
Existing brake systems with non-excitation electromagnetic brakes face difficulties in mechanically releasing the brake on a rotary shaft when the space around the electromagnetic brake device is small, as the manual release mechanism may not operate effectively in confined spaces.
Innovation Solution
A brake system incorporating an electromagnetic brake device with a brake disc, stator, armature, and magnet coil, along with a brake release device featuring a guide member, release plates, and a transfer unit that uses air pressure or hydraulic pressure to move the release plates and press the armature against the stator, allowing for mechanical release of the brake even in limited spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual release arm is used to mechanically release the brake, then the brake can be released without electricity, but the device cannot be operated when space around the electromagnetic brake device is small
Solution Approach 1:
The release plate is disposed inside the guide member, forming a nested structure where the release plate moves within the confined space of the guide member. This nesting allows the release mechanism to be compact while still achieving the necessary mechanical action to release the brake, solving the space constraint problem.
Solution Approach 2:
The patent introduces a fluid pressure supply device that supplies fluid pressure to the release plate through the guide member. This pneumatic/hydraulic mechanism enables the release plate to move and press the armature against the stator, providing a powerful and reliable brake release mechanism that works effectively in confined spaces where manual operation would be difficult.
2Reliability
If the armature is pressed against the brake disc by a brake spring, then the brake is applied reliably, but the brake cannot be released mechanically when space is limited
Solution Approach 1:
The release plate acts as an intermediary component between the fluid pressure supply and the armature. It receives fluid pressure through the guide member and translates this pressure into mechanical force to press the armature against the stator, providing a controlled and reliable release mechanism without requiring complex manual operation in confined spaces.
Solution Approach 2:
The patent replaces the traditional manual mechanical release system with a fluid pressure-based system. The fluid pressure supply device and guide member work together to automatically position and press the release plate, substituting complex manual mechanical operations with a simpler, more reliable pneumatic or hydraulic mechanism.
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
Enables the mechanical release of the brake on the rotary shaft without electricity, even in small spaces, by using air or hydraulic pressure to move the release plates and press the armature against the stator, effectively overcoming the space constraints and ensuring reliable brake release.
Implementation Method 1
a magnet coil disposed in the stator and configured to be excited when current is applied to the magnet coil
Implementation Method 2
an urging member disposed between the stator and the armature and configured to urge the armature such that the armature is pressed against the brake disc
Implementation Method 3
a transfer unit that is configured to move the release plate in a direction in which the rotary shaft extends
Data Source
AI summary
A brake system includes an electromagnetic brake device configured to apply a brake to a rotary shaft when current is not applied to the brake system and release the brake on the rotary shaft when current is applied to the brake system; and a brake release device configured to forcibly release the brake on the rotary shaft when current is not applied to the brake system. The brake release device includes a guide member having a tube shape; a release plate disposed within the guide member and engaged with the armature; and a transfer unit that is configured to move the release plate in a direction in which the rotary shaft extends.