Electric Braking Device with Adjustable Mounting for Misalignment Compensation
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Solution Overview
Problem
Existing electric braking devices for drive shafts face challenges in precise positioning of mechanical elements, particularly when structures lack precise alignment between the braking member and the drive shaft, limiting their application to systems with misalignments and shape defects.
Innovation Solution
The electric braking device employs a combination of 'AP plane support connection', 'point connection LP', and 'annular linear connection LA' to provide degrees of freedom for the braking member, allowing it to compensate for misalignments and shape defects during rotational drive by guiding the braking member with respect to the braking disc using sliding pads and ball joints, ensuring proper alignment and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fixed positioning of braking member is used, then precise alignment is achieved, but the system cannot accommodate misalignments and shape defects in drive shaft
Solution Approach 1:
The braking member is transformed from a fixed rigid structure to a dynamic adjustable structure through the introduction of sliding pads and ball joints. These components enable the braking member to dynamically adapt its position and orientation to accommodate misalignments and shape defects in the drive shaft, while maintaining effective braking contact.
Solution Approach 2:
The system changes the positional parameters of the braking member by allowing sliding movements along the drive shaft and rotational adjustments via ball joints. This enables the braking member to adjust its location and orientation parameters to match the actual position of the drive shaft, compensating for manufacturing imperfections.
2Adaptability or versatility
If sliding pads and ball joints are added to provide degrees of freedom, then adaptability to misalignments is improved, but device complexity increases
Solution Approach 1:
The fixing means is segmented into multiple independent functional components: sliding pads for linear adjustment, ball joints for rotational adjustment, and connection elements. This segmentation allows each component to perform a specific adjustment function, making the overall complex system manageable and maintainable through modular design.
Solution Approach 2:
Sliding pads and ball joints act as intermediary elements between the fixed mounting structure and the braking member. These intermediaries absorb the misalignments and transmit only the necessary braking force, simplifying the connection interface while providing the needed degrees of freedom.
3Measurement precision
If multiple connections (AP, LP, LA) are used to guide braking member, then positioning accuracy is improved, but ease of manufacture decreases
Solution Approach 1:
The sliding pads and ball joints are designed to self-align and self-adjust during installation and operation. The sliding pads automatically position themselves along the drive shaft, and the ball joints self-center through their spherical geometry, reducing the need for precise pre-positioning and complex assembly procedures.
Solution Approach 2:
The fixing means uses dynamic components that automatically adapt to positional variations during assembly. The sliding pads can move freely in their designated directions, and the ball joints can rotate to find their optimal position, eliminating the need for precise manual positioning and complex alignment procedures.
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 enables effective braking by compensating for misalignments and shape defects, ensuring reliable operation even in structures with imperfect mechanical alignments, enhancing the versatility and reliability of electric braking systems.
Implementation Method 1
sliding pads mounted close to the braking disc so that the latter at least partially crosses said jaws and sliding shoe... sliding pads each comprising a groove through which the braking disc passes... rubbing with the braking disc so as to provide guidance and a positioning of the air gap
Implementation Method 2
a ball joint pierced in the middle and arranged inside a bore made in the lower part of the plate so that said ball joint comes around the second finger
Implementation Method 3
Braking is canceled by the magnetic action of an electromagnet which acts in opposition to these springs when supplied with electrical energy
Data Source
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AI summary
The electric braking device according to the present invention comprises a braking member (2) which consists on the one hand of electric jaws (7) and of at least one sliding shoe (8) which are mounted near the brake disc (3) so that the latter passes at least partially between the said electric jaws (7) and the sliding shoe (8) and, on the other hand, of fixing means (4) for fixing the electric jaws (7) and the sliding shoe (8) to the fixed chassis (6) giving the said jaws and the said shoe degrees of freedom which are obtained by the combination of various connections known as «flat-plane connection» AP, «point connection» LP and «annular linear connection» LA in order to compensate for misalignments and defects in the shape of the brake disc (3) while it is being rotationally driven.