Actuating Piston Sealing-Guiding Structure for Transverse Force Absorption
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Solution Overview
Problem
Existing actuating pistons for hydrostatic adjustment installations face challenges in effectively absorbing transverse forces and managing friction between the piston and cylinder, leading to increased complexity and potential assembly errors.
Innovation Solution
An actuating piston with a sealing and guiding unit integrated into a circumferential recess, divided into two regions for optimized transverse and axial force absorption, featuring a wide guide region for reduced load per area and a stepped protrusion design for enhanced sealing and guiding, which reduces friction and hysteresis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing and guiding installation with multiple individual elements is used, then reliable sealing and guiding are achieved, but device complexity and assembly complexity increase
Solution Approach 1:
The patent combines multiple separate sealing and guiding elements into a single integrated sealing and guiding installation that is received in one circumferential recess. This merging approach maintains the reliable sealing and guiding functions while reducing the number of parts from three or more individual elements to one unified component, thereby reducing assembly complexity and the risk of assembly errors.
Solution Approach 2:
The sealing and guiding installation performs multiple functions simultaneously: it seals the gap between the actuating piston and actuating cylinder, guides the piston with stability in terms of tilting, and absorbs both transverse forces and axial forces. This multi-functional design eliminates the need for separate sealing elements and guiding elements, reducing overall device complexity while maintaining reliability.
2Device complexity
If a single integral sealing and guiding unit is used, then assembly complexity is reduced, but the ability to absorb transverse forces is restricted
Solution Approach 1:
The sealing and guiding installation is segmented into two distinct functional regions: a first region configured for absorbing transverse forces and a second region configured for absorbing axial forces. This segmentation within the integrated unit allows each region to be optimized for its specific force absorption function, maintaining the ability to handle transverse forces effectively while keeping the overall design as a single assembled piece.
Solution Approach 2:
Different regions of the sealing and guiding installation are designed with different local qualities and geometries suited to their specific functions. The first region has structural characteristics optimized for transverse force absorption, while the second region is designed for axial force absorption. This local differentiation enables the single integrated unit to effectively handle multiple force directions without requiring separate components.
3Stability of the object's composition
If the guide element has large axial extent, then tilting stability is improved, but friction and wear increase
Solution Approach 1:
The sealing and guiding installation is designed to be radially expandable, allowing it to adapt its dimensions dynamically. When radially expanded, the guide region provides sufficient axial extent for tilting stability. The expandable nature allows optimization of the guide region dimensions to achieve the right balance between stability and friction reduction.
Solution Approach 2:
The radial expansion capability allows changing the dimensional parameters of the sealing and guiding installation. By expanding radially, the installation can increase the axial extent of the guide region to improve tilting stability while maintaining controlled contact characteristics that manage friction and wear levels.
Data Source
AI summary
An actuating piston for a hydrostatic adjustment installation includes at least one sealing and guiding unit which is insertable into a circumferential recess of an actuating piston. The circumferential recess is composed of two regions, and has the effect of improving the guiding and sealing of the actuating piston. The actuating piston is arranged in an adjustment installation.