Fluid Pressure Cylinder Piston Shock Absorption
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Solution Overview
Problem
Conventional fluid pressure cylinders fail to effectively buffer shocks when the piston abuts against cover members during displacement, leading to potential damage and noise.
Innovation Solution
Incorporating an elastically deformable plate body that connects the piston rod and piston main body, allowing the plate body to deform and absorb shocks when the piston abuts against cover members, thereby suppressing shock transmission to the piston rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid piston structure is used, then the structural strength is improved, but shock transmission to the piston rod increases
Solution Approach 1:
The piston is divided into two functional parts: a rigid piston main body for structural strength and sealing, and a flexible plate body for shock absorption. This segmentation allows each part to fulfill its specific function - the main body maintains structural integrity while the plate body absorbs shocks through elastic deformation.
Solution Approach 2:
The plate body is designed with specific material properties (flexibility and elasticity) that differ from the rigid piston main body. By changing the physical parameters of the connecting component, the system transforms rigid shock transmission into flexible shock absorption, reducing harmful vibrations and impacts.
2Object-affected harmful factors
If shock absorption mechanisms are added, then shock buffering is improved, but device complexity increases
Solution Approach 1:
The shock absorption function is merged into the piston structure itself through the plate body, rather than adding a separate shock absorption mechanism. This integration achieves shock buffering while maintaining a simple overall structure, as the plate body serves dual purposes of connection and shock absorption.
Solution Approach 2:
The plate body automatically absorbs shocks through its inherent elastic properties without requiring external control systems or additional components. The material's natural elasticity provides the shock absorption function, eliminating the need for complex mechanical shock absorption mechanisms.
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 elastically deformable plate body effectively absorbs shocks and prevents their transmission to the piston rod, ensuring a simple configuration that buffers shocks efficiently during piston displacement.
Implementation Method 1
the plate body is configured to undergo elastic deformation when the piston abuts against the cover members
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
In a fluid pressure cylinder (10), a piston unit (18), which is displaced along an axial direction under the supply of a pressure fluid, is disposed in the interior of a cylinder tube (12) of the fluid pressure cylinder (10). The piston unit (18) includes a disk shaped plate body (98) connected to one end of a piston rod (20), and a ring body (100) connected to an outer edge portion of the plate body (98). The plate body (98) is formed from an elastically deformable metal material, and by the plate body (98) becoming elastically deformed and flexing when the ring body (100) of the piston unit (18) abuts against the head cover (14) or the rod cover (16), shocks applied with respect to the piston unit (18) are buffered.