Coated Coupling Brake Piston Assembly for Low-Wear Actuation
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Solution Overview
Problem
The assembly and maintenance of coupling/braking devices are complex and costly due to the numerous components that need to be adjusted and aligned during the assembly process, leading to increased handling expenditure.
Innovation Solution
The actuating device features an axially displaceable actuating piston with a sliding coating at the contact region, allowing for minimal wear and reduced friction, and a control piston that interacts with the coupling/braking parts, eliminating the need for additional components and simplifying assembly by using a lubricant to enhance the service life of the sliding coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components are used in the actuating device, then the functionality and reliability are improved, but the assembly complexity and handling costs increase
Solution Approach 1:
The patent combines the actuating piston and control piston into a single integrated component. The control piston is formed as one piece with the actuating piston, eliminating the need for separate components and reducing assembly complexity while maintaining the functional separation between control and actuation functions.
Solution Approach 2:
The integrated piston serves multiple functions: it acts as both the control piston (responding to hydraulic pressure) and the actuating piston (transmitting force to the coupling/braking parts). This multi-functional design reduces the number of components needed in the system.
2Duration of action of moving object
If a coating is applied to reduce friction and wear, then the service life is improved, but the manufacturing complexity increases
Solution Approach 1:
The coating is applied only to specific contact regions of the piston where friction and wear occur, rather than the entire surface. This localized application reduces manufacturing complexity while still providing the wear protection and friction reduction benefits where needed.
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 configuration reduces handling complexity and costs by minimizing wear and ensuring a long service life of the actuating piston, while maintaining proper function over extended periods without metallic rubbing, thus enhancing the operational efficiency and longevity of the coupling/braking device.
Implementation Method 1
a sliding coating is provided in the contact region between the actuating piston and the control piston
Implementation Method 2
the control piston is provided with at least one thin bore through which a lubricant can reach the contact region between the two pistons
Data Source
AI summary
An actuating device for a coupling/braking device is provided with at least one actuating piston that is axially slidable relative to a shaft and, in an actuating state, exerts an axially acting contact pressure on coupling/braking parts of the coupling/braking device. At least one control piston is provided that axially displaces the at least one actuating piston into the actuating position. A coating is provided in a contact region between the actuating piston and the control piston, wherein the coating is disposed at the actuating piston or at the control piston or at both the actuating piston and the control piston. The actuating piston can also be designed as a control piston that interacts immediately with the coupling/braking parts of the coupling/braking device.