Hydraulic Axial Piston Valve Spring Section
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Solution Overview
Problem
Existing axial piston machines face inefficiencies and performance variations due to uneven force distribution and potential wear issues when transferring force from the cylinder block to the valve arrangement, which can lead to localized contact pressure peaks and misalignment.
Innovation Solution
Incorporating an elastically deformable spring section formed integrally with the rotating part of the valve arrangement, which is machined to distribute force symmetrically around the axis of rotation, minimizing radial deformation and maintaining contact position, thus ensuring efficient force transfer and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If force is transferred from the cylinder block to the rotating part of the valve arrangement, then the valve arrangement is pressed against the stationary part with necessary force, but localized contact pressure peaks and wear occur due to uneven force distribution
Solution Approach 1:
The rotating part incorporates a spring section with specific elastic properties at the location where force is applied from the cylinder block. This localized elastic deformation capability allows the force to be distributed more evenly across the contact surface with the stationary part, preventing localized pressure peaks and reducing wear at critical contact points.
2Device complexity
If force is transferred through a rigid connection from the cylinder block to the valve arrangement, then the structure is simple, but misalignment occurs between the first and second parts of the valve arrangement
Solution Approach 1:
The rotating part is designed with an spring section that changes its stiffness parameter under load. This elastic element allows for minor misalignments between the cylinder block and the valve arrangement parts by deforming elastically, thereby maintaining proper alignment and sealing contact without requiring complex adjustment mechanisms.
3Reliability
If multiple separate spring components are used to achieve elastic force distribution, then force distribution is improved, but the number of parts and assembly complexity increases
Solution Approach 1:
The spring section is integrated directly into the rotating part of the valve arrangement as a monolithic component. This merging of the spring function with the rotating part eliminates the need for separate spring components, reducing the number of parts and simplifying assembly while still achieving the desired elastic force distribution across the valve arrangement.
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 enhances machine efficiency, reduces wear, and ensures consistent performance across identical machines by distributing force symmetrically around the axis of rotation, minimizing misalignment and wear, while eliminating the need for additional spring components and reducing production costs.
Implementation Method 1
the first part comprises an elastically deformable spring section
Data Source
AI summary
A hydraulic axial piston machine (1) is described, the machine comprising a housing, a cylinder block (2) rotatably mounted in the housing about an axis or rotation (7) and having at least one cylinder (3), and a valve arrangement (4) between the cylinder block (2) and the housing, the valve arrangement having a first part (4) rotating with the cylinder block (2) and a second part mounted stationary with respect to the housing. Such a machine should have a high efficiency. To this end the first part (4) comprises an elastically deformable spring section (9).