Nested Hydraulic Press Piston Assembly With Unified Fluid Channel
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Solution Overview
Problem
Piston-cylinder assemblies of hydraulic presses face challenges with large size and space requirements, as well as complex hydraulic fluid channel structures, particularly when using two pistons, leading to increased complexity and difficulty in control.
Innovation Solution
A piston-cylinder assembly design featuring a basic cylinder with a ring cylinder attachment, where two pistons are positioned one inside the other, sharing a unified hydraulic fluid channel to achieve pressure effects without increasing the assembly's diameter, utilizing a spacer ring and sealing rings to maintain fluid flow and pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If two pistons are used to increase working force, then the force output is improved, but the assembly size and space requirement increase
Solution Approach 1:
The first piston is nested inside the second piston, with the first piston located in the bottom part of the basic cylinder and the second piston located above the first piston in the top part of the cylinder structure. This nesting arrangement allows two pistons to occupy overlapping spatial volumes, thereby increasing the effective piston area for force generation without proportionally increasing the overall assembly footprint.
Solution Approach 2:
The invention transitions from a single-plane piston arrangement to a multi-dimensional configuration by stacking pistons vertically along the cylinder axis. The first piston operates in the bottom part while the second piston operates in the top part, utilizing the vertical dimension to accommodate multiple pistons within a compact cylindrical envelope, thus increasing force output without significantly increasing lateral space requirements.
2Force
If two pistons are used to increase force, then the force output is improved, but the hydraulic fluid channel structure becomes complicated
Solution Approach 1:
The invention merges the hydraulic fluid supply systems for the first and second pistons into a single unified hydraulic fluid channel. This unified channel is in flow connection to the first hydraulic fluid space and also provides pressure to the second hydraulic fluid space, thereby simplifying the channel structure compared to having separate channels for each piston while still enabling both pistons to generate force.
Solution Approach 2:
The unified hydraulic fluid channel serves multiple functions: it supplies hydraulic fluid to the first hydraulic fluid space below the first piston and simultaneously supplies hydraulic fluid to the second hydraulic fluid space below the second piston. This multi-functional channel design eliminates the need for separate channel structures for each piston, reducing overall system complexity.
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 results in a compact, forceful piston-cylinder assembly with simplified structure and reduced space requirements, achieving the desired force by multiplying hydraulic fluid pressure with the combined surface areas of the pistons while maintaining control over fluid flow.
Implementation Method 1
The operation of the hydraulic press is based on Pascal's law, according to which external pressure spreads evenly all over a fluid and thus the force achieved in the hydraulic press is the pressure of the hydraulic fluid multiplied by the piston's surface area.
Data Source
AI summary
Disclosed is a piston-cylinder assembly of a hydraulic press, which includes a basic cylinder and a first and second piston. A ring cylinder is formed above the basic cylinder as a continuation of the cylinder structure. The first piston is located inside the basic cylinder in the bottom part of the basic cylinder and the second piston is located above the first piston in the top part of the cylinder structure. The piston-cylinder assembly has a first hydraulic fluid space below the first piston and a second hydraulic fluid space below the second piston and the piston-cylinder assembly includes a unified hydraulic fluid channel in flow connection to the first hydraulic fluid space in order to provide a pressure effect in the first piston and to the second hydraulic fluid space in order to provide a pressure effect in the second piston.