Brake Device Sensor Adjustment Mechanism
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Solution Overview
Problem
Existing braking devices for commercial vehicles with wheel drum brakes face complexity and cost issues due to the need for dismantling when the sensor for measuring rotational speed becomes misaligned, leading to ABV errors.
Innovation Solution
A braking device with a mechanical adjusting element that allows the sensor to be spatially displaced and adjusted without dismantling, using a rigid actuating element that can transmit compressive forces to reposition the sensor along its longitudinal axis, accessible from outside the brake drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor is fixedly mounted on the brake carrier, then the sensor position is stable, but adjustment becomes complex and costly requiring dismantling
Solution Approach 1:
The sensor mounting is changed from a fixed rigid connection to a dynamic adjustable connection. The adjusting element allows the sensor to be displaced axially along the cable element to correct positional deviations, transforming the static mounting into a dynamically adjustable system that maintains both stability and ease of repair
Solution Approach 2:
A cable element is introduced as an intermediary between the sensor and the brake carrier. This cable element acts as a flexible connection that allows positional adjustment while maintaining sensor stability during operation. The adjusting element manipulates this intermediary to achieve precise sensor positioning without dismantling
2Measurement precision
If the sensor moves away from the pole wheel due to vibrations, then measurement accuracy decreases, but manual adjustment requires dismantling the brake drum
Solution Approach 1:
The cable element serves as a mediator that transmits adjustment forces from the adjusting element to the sensor. This intermediary mechanism allows precise sensor repositioning without requiring dismantling of the brake drum or wheel hub, simplifying the adjustment procedure while maintaining measurement precision
Solution Approach 2:
The adjusting element is designed to be accessible from the outside of the brake drum, allowing the sensor to be self-adjusted by the operator without requiring complex dismantling procedures. The system enables easy self-service adjustment to restore measurement accuracy after vibration-induced displacement
3Ease of operation
If the sensor is accessible from outside the brake drum, then adjustment is simplified, but the adjusting element requires additional space
Solution Approach 1:
The adjusting element and cable element are nested within the existing brake drum structure. The cable element runs through the brake drum interior and exits through an opening in the closure plate, allowing the adjusting element to be accessible from outside while minimizing the additional volume required. This nested arrangement simplifies operation without significantly increasing the brake drum volume
Data Source
Figure 1
AI summary
The invention relates to a brake device for braking a wheel, comprising a brake drum (20), a brake carrier (30) for displacing a brake lining (34) in order to press the brake lining (34) against the brake drum (20), and a sensor (50) for sensing a rotational speed of the wheel, characterized in that an adjusting element (60) is provided, which can be coupled to the sensor (50) and by means of which the sensor (50) can be spatially adjusted.