Nested Pressure Accumulator Layout for Restraint Hydraulic Cylinders
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Solution Overview
Problem
Hydraulic cylinders for restraint systems in amusement rides are difficult to access and maintain due to their weight and protruding components, making them cumbersome and prone to damage in limited installation spaces.
Innovation Solution
A compact hydraulic cylinder design with a pressure accumulator positioned between the outer and inner housings, featuring a shut-off valve and an elastic membrane for volume compensation, reduces weight and eliminates protruding components, allowing for easier replacement and secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hydraulic cylinder is designed with traditional external pressure accumulator and support elements, then the system can maintain hydraulic pressure, but the weight increases and accessibility for maintenance deteriorates
Solution Approach 1:
The pressure accumulator is nested within the annular space between the outer housing and inner housing of the hydraulic cylinder. This nested arrangement integrates the pressure accumulator into the existing structure, eliminating the need for external support elements and improving maintenance accessibility while maintaining hydraulic pressure reliability.
2Quantity of substance
If the pressure accumulator is positioned externally with support elements, then hydraulic fluid storage is sufficient, but the device complexity and protruding components increase
Solution Approach 1:
The pressure accumulator is merged with the hydraulic cylinder housing structure by positioning it in the annular space between the outer and inner housings. This integration combines the fluid storage function with the existing structural components, reducing overall device complexity while maintaining sufficient hydraulic fluid storage capacity.
3Ease of repair
If the hydraulic cylinder has protruding components for external access, then maintenance can be performed, but the components are vulnerable to external damage
Solution Approach 1:
By nesting the pressure accumulator within the housing structure, the system eliminates protruding components that would be vulnerable to external damage. The integrated design maintains maintenance capability through accessible service ports while protecting internal components from external forces.
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
The design results in a lightweight, compact, and easily replaceable hydraulic cylinder that ensures secure passenger restraint without external damage risks, while allowing for adjustable tension, enhancing safety and maintenance accessibility.
Implementation Method 1
The pressure accumulator comprises a storage space for hydraulic fluid
Implementation Method 2
an at least partially elastic membrane. The at least partially elastic membrane allows the volume of the storage space to change as required
Data Source
AI summary
A hydraulic cylinder for a restraint system includes an outer housing, an inner housing, a pressure accumulator and a shut-off valve switchable between a release position and a shut-off position. The inner housing is disposed inside the outer housing and has a piston, a first working chamber and a second working chamber, which is separated from the first working chamber by the piston. The first working chamber is connected to the accumulator via a first line arrangement, and the second working chamber is connected to the accumulator via a second line arrangement. The pressure accumulator comprises a storage space for hydraulic fluid. The shut-off valve is disposed in the second line arrangement and blocks the second line arrangement in the shut-off position. The pressure accumulator is disposed between the outer housing and the inner housing.