Hydraulic Clamping Device Axial Force Isolation
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Solution Overview
Problem
Existing hydraulic cylinder mountings are space-demanding and require partial incorporation into structures, limiting cylinder diameters and complicating pipe conveyance due to the need for pressure boosters and flexible connections prone to leaks.
Innovation Solution
A hydraulic clamping device with a piston isolated from forces perpendicular to the longitudinal axis, using a fixedly connected cylinder housing and an intermediate piece with a pivot-bearing to transmit forces only in the axial direction, avoiding bending moments and allowing for compact and stable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cylinder housing is fixedly connected to the structure, then the cylinder structure is simplified and space is reduced, but the piston is exposed to forces acting perpendicularly to the longitudinal axis
Solution Approach 1:
An intermediate piece with a pivot-bearing is introduced between the piston rod and the clamping piece. This intermediary component transfers forces from the clamping piece to the piston rod along the longitudinal axis, eliminating bending moments while maintaining the fixed connection of the cylinder housing to the structure.
2Volume of moving object
If the cylinder is incorporated into the structure, then the mounting is compact, but the possible cylinder diameters are limited and pipe conveyance is complicated
Solution Approach 1:
The mounting system is divided into separate functional components: the cylinder housing is fixedly connected to the structure independently, while the clamping piece is mounted on guides or pivot-bearings. This segmentation allows the cylinder to have any suitable diameter and facilitates pipe conveyance while maintaining compact overall dimensions.
3Adaptability or versatility
If hoses or pivotal couplings are used for fluid supply, then the cylinder can be link-supported, but leak-prone components are introduced
Solution Approach 1:
The intermediate piece with pivot-bearing serves as a rigid intermediary that transmits forces without requiring flexible hoses or pivotal couplings. This eliminates leak-prone flexible connections while maintaining the ability to accommodate angular displacements of the clamping piece through the pivot-bearing mechanism.
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
Simplifies the cylinder structure by reducing the need for bending moment resistance and enabling compact, robust designs suitable for gripping pipes with varying diameters without obstructing pipe connections.
Implementation Method 1
a hydraulic cylinder being arranged to exert, along a longitudinal axis thereof, a force against the clamping piece
Implementation Method 2
a piston in the hydraulic cylinder is isolated from the clamping piece with respect to forces acting perpendicularly relative to the longitudinal axis
Data Source
AI summary
A hydraulic clamping device comprises clamping piece supported in a structure. In addition, the clamping device comprises a hydraulic cylinder having a longitudinal axis and including a cylinder housing fixedly connected to the structure. Further, the clamping device comprises an intermediate piece axially disposed between the piston and the clamping piece. The hydraulic cylinder is adapted to exert a force along the longitudinal axis against the clamping piece.