Inline Piston Pump Rotating Yoke Wear Reduction
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Solution Overview
Problem
Inline piston pumps face issues with mechanical and hydraulic inefficiencies due to the wear-prone interface between traditional piston shoes and the angled plate, leading to reduced volumetric efficiency and shorter lifespan, along with high manufacturing costs and complexity.
Innovation Solution
The angled yoke assembly within the pump synchronously rotates with the cylinder, minimizing friction by allowing the bearing plate to rotate with the cylinder block, thus eliminating the need for traditional piston shoes and reducing wear, while using hardened tool steel for pistons and bearing plates to enhance durability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional piston shoes are used to contact the angled plate, then the pump can maintain structural integrity, but the interface between the angled plate and piston becomes prone to wear, reducing reliability and lifespan
Solution Approach 1:
The patent applies the dynamics principle by making the angled plate rotate synchronously with the cylinder instead of keeping it stationary. This dynamic configuration ensures that the angled plate and piston move together, eliminating relative motion and wear at the interface while maintaining structural integrity and reliability
2Reliability
If traditional piston shoes with hydrostatic pads are used, then wear is reduced, but the hydrostatic pads create a leakage path that reduces volumetric efficiency
Solution Approach 1:
The patent extracts and eliminates the traditional piston shoe structure with hydrostatic pads entirely. By using a piston with a flat face that contacts the rotating angled plate directly, the design removes the source of leakage paths while maintaining wear resistance through the synchronized rotation mechanism
3Ease of operation
If traditional piston shoe designs are used, then the pump can operate, but manufacturing costs and complexity increase due to expensive and difficult to manufacture shoes
Solution Approach 1:
The patent removes the complex piston shoe assembly from the design. Instead of manufacturing expensive shoes with hydrostatic pads, the invention uses a simplified piston structure with a flat face that directly contacts the rotating angled plate, significantly reducing manufacturing complexity and cost while maintaining operational functionality
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 design enhances the pump's efficiency, extends its lifespan, and simplifies manufacturing by reducing mechanical inefficiencies and wear, resulting in a more cost-effective and durable inline piston pump configuration.
Implementation Method 1
minimizing friction by allowing the bearing plate to rotate with the cylinder block
Data Source
AI summary
An inline piston pump that is efficient, manufacturable, and durable. The angled bearing surface within the pump that it contacts drives the piston and rotates with the cylinder.