Connector Plate Valve Slide Layout for Compact Axial Piston Machines
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Solution Overview
Problem
Existing axial piston machines face challenges in achieving a large maximum pivot angle while maintaining a compact size and low installation height, which is difficult to achieve with existing designs that require significant housing modifications or increased costs.
Innovation Solution
The design incorporates a first and second valve slide system with adjustable throttles and springs, where the first valve axis is oriented perpendicular to the adjusting axis, and the second valve axis intersects with the first, allowing for a compact and cost-effective axial piston machine with a large pivot angle range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the maximum pivot angle is increased to improve the adjustment range, then the pivot angle adjustment range is improved, but the installation height increases
Solution Approach 1:
The valve axis is oriented transversely to the adjusting axis, perpendicular to it, creating a two-dimensional arrangement that allows the valve slide to control pivot angle adjustment without increasing the axial installation height. This dimensional reorientation enables the control mechanism to operate in a different spatial plane, resolving the conflict between adjustment range and compact height.
Solution Approach 2:
The valve slide is integrated into the connector plate, with the connector plate serving as both a structural component and a mounting surface for the valve slide. This nesting approach embeds the control mechanism within existing structural elements, maximizing space utilization and maintaining compact installation height while enabling full pivot angle adjustment range.
2Strength
If the housing structure is strengthened to accommodate the valve slide, then the structural strength is improved, but the manufacturing cost increases
Solution Approach 1:
The connector plate serves multiple functions: it provides structural support for the valve slide, acts as a mounting surface for control components, and maintains the hydraulic circuit integrity. By making the connector plate multi-functional, the housing structure requires no additional strengthening, thus avoiding increased manufacturing complexity and cost while maintaining necessary structural strength.
Solution Approach 2:
The valve slide is integrated directly into the connector plate, merging two previously separate components (valve mechanism and connector structure) into a unified assembly. This integration eliminates the need for separate mounting structures and housing reinforcements, simplifying manufacturing and reducing costs while maintaining structural integrity.
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 results in a compact axial piston machine with a small installation height and a large adjustable pivot angle, facilitating easy production and low-cost manufacturing by allowing the axial piston machine to be integrated into a pot-like housing without significant structural enhancements.
Implementation Method 1
wherein it is acted upon by a first spring in the closing direction of the second throttle
Implementation Method 2
wherein it is acted upon by the pressure at the control point in the opening direction of the second throttle
Data Source
AI summary
An axial piston machine of oblique axis design has a pivot angle that is adjustable via a set piston and a control valve and includes a first valve slide that is linearly movable relative to a first valve axis and is connected at two opposite ends to a first or a second fluid port. The first valve slide has a central region that defines a control point at which the lower of pressures at the first and second fluid ports act. The control point is connected via a fixed first throttle and a second throttle to a housing interior. A second valve slide that is linearly movable relative to a second valve axis is configured to adjust the second throttle. The first valve axis is arranged between the set piston and the control valve or a region of the control valve and is oriented transverse to the adjusting axis.