Radial Piston Brake Chamber Layout Without Separate Oil Reservoir
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Solution Overview
Problem
Existing radial piston machines with multi-disc brakes require significant installation space and include costly components, such as the annular mechanical seal, and necessitate a separate oil reservoir for lubrication.
Innovation Solution
The brake disc assembly is positioned within the brake chamber, with the first and second annular sections delimiting the brake chamber, allowing for a more compact design that eliminates the need for expensive seals and separate oil reservoirs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake disc assembly is disposed around the drive shaft with an annular mechanical seal, then reliable sealing is achieved, but installation space and component cost increase
Solution Approach 1:
The brake chamber is merged with the brake disc assembly, eliminating the need for a separate sealing system. The brake chamber serves dual purposes: as a braking mechanism and as a sealed containment space, thereby reducing installation space while maintaining sealing reliability through the inherent structure of the integrated design
Solution Approach 2:
The brake disc assembly is nested within the brake chamber, creating a compact configuration where the braking components are contained inside the chamber volume. This nesting arrangement eliminates the need for external sealing mechanisms and reduces the overall installation space required
2Reliability
If an annular mechanical seal is used to seal the gap between the first annular section and the housing, then sealing is achieved, but component cost increases
Solution Approach 1:
The brake chamber structure is merged with the sealing function, eliminating the need for a separate annular mechanical seal. The chamber walls and brake disc assembly together provide the sealing barrier, reducing component count and manufacturing cost while maintaining sealing effectiveness
Solution Approach 2:
The expensive annular mechanical seal is extracted from the design and replaced with the inherent sealing capability of the brake chamber structure. The sealing function is achieved through the geometric configuration and pressure differential within the brake chamber rather than through a dedicated sealing component
3Reliability
If a separate oil reservoir is provided to lubricate the brake discs, then proper lubrication is ensured, but device complexity and component count increase
Solution Approach 1:
The brake chamber serves multiple functions: it contains the brake disc assembly, provides the braking mechanism, and acts as the lubrication reservoir. The same chamber that houses the brake components also contains the lubricating oil, eliminating the need for a separate oil reservoir and reducing device complexity
Solution Approach 2:
The lubrication system is merged with the brake chamber structure. The brake chamber simultaneously serves as the containment space for the brake mechanism and as the reservoir for lubricating oil, thereby reducing component count while ensuring proper lubrication of the brake discs
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 installation space requirements, decreases component count and cost, and eliminates the need for a separate oil reservoir, resulting in a more cost-effective and space-efficient radial piston machine.
Implementation Method 1
The multi-disc brake is preloaded with a disc spring in the closed state. The spring is disposed between the brake piston and the disc section, wherein a force of the spring can be transmitted to the brake disc assembly
Implementation Method 2
The multi-disc brake can be switched to an open state by pressurizing a brake chamber that is limited by an annular brake piston
Data Source
AI summary
A radial piston machine includes a multi-disc brake, a brake disc assembly of which interacts with a first annular section on a drive shaft and a second annular section on a housing. The brake disc assembly is disposed within a brake chamber. The first annular section and the second annular section each delimit the brake chamber in sections. A disc section, a spring, a brake piston, and the brake disc assembly are disposed next to one another in a specified sequence along an axis of rotation in such a way that a force of the spring is transmitted to the brake disc assembly.