Brake Wear Limit Sensing via Pressure Piece Position Change
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Solution Overview
Problem
Existing brake wear limit detection systems are structurally complex and require significant installation space, making them unsuitable for space-constrained applications like construction machines.
Innovation Solution
A brake design with a pressure piece unit and a sensor system that detects positional changes between a detection surface and the sensor, allowing for reliable wear limit assessment without the need for complex structural arrangements, utilizing a detection body and spring mechanism to signal wear limit reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is arranged to detect wear limit in a brake, then wear limit detection capability is improved, but structural complexity and installation space requirements increase
Solution Approach 1:
The sensor is integrated directly into the pressure piece, merging the detection function with the existing pressure application component. This eliminates the need for separate detection structures and reduces overall device complexity while maintaining wear limit detection capability.
Solution Approach 2:
The pressure piece serves dual functions: applying pressure to the brake bodies and housing the sensor for wear limit detection. This multi-functionality reduces the number of separate components needed, simplifying the overall brake structure.
2Measurement precision
If a sensor is arranged to detect wear limit in a brake, then wear limit detection capability is improved, but installation space requirements increase
Solution Approach 1:
The sensor is integrated directly into the pressure piece, merging the detection function with the existing pressure application component. This eliminates the need for separate detection structures and reduces overall device complexity while maintaining wear limit detection capability.
3Reliability
If the sensor is separated from oil and lining abrasion, then sensor reliability is improved, but structural complexity increases
Solution Approach 1:
The sensor is extracted from the oil-filled brake chamber environment and placed in the pressure piece, which remains outside the oil bath. This separates the sensor from harmful factors (oil and lining abrasion) while maintaining a simple integrated structure within the pressure piece.
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 provides a space-saving, structurally simple method to ascertain brake wear limits, ensuring reliable detection and reducing wear on brake components while maintaining operational efficiency.
Implementation Method 1
The sensor is designed to detect a positional relationship or a change in the positional relationship between itself and the detection surface
Implementation Method 2
The braking effect between the at least one first brake body and the at least one second brake body is based on a frictional engagement caused by the force with which the pressure piece presses the at least one first brake body and the at least one second brake body against each other
Implementation Method 3
Said part can in particular be mounted such that it can be moved relative to the pressure piece in the first and second directions in which the pressure piece can also be moved
Data Source
AI summary
A brake (1) with a device for ascertaining a wear limit, the brake (1) comprising: a pressure piece unit (10) comprising a pressure piece (12) designed to press at least one first brake body (3) and at least one second brake body (4) against each other for applying the brake; and a sensor (20) designed to detect a positional relationship between itself and a detection surface (11) of the pressure piece unit (10), wherein if the brake (1) has not reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) does not change during a movement of the pressure piece (12) in a first direction, and if the brake (1) has reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) changes during the movement of the pressure piece (12) in the first direction.