Telescopic Patient Lift Beam Casing and Spring Support
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Solution Overview
Problem
Telescopic lifting beams often unintentionally bend when in their protruded position, leading to structural weakness, particularly at the juncture where the outer beam extends beyond the inner beam, necessitating a solution to enhance strength without complex or costly modifications.
Innovation Solution
A cylindrical casing with a pressure spring that surrounds both lifting beams, adjusting its position to support the juncture and absorb bending stresses as the beams transition between retracted and protruded positions, using a driver to control the movement of the telescopically displaceable beam and the casing's displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If telescopic lifting beams are used in protruded position, then lifting reach is extended, but bending stresses cause structural weakness at the juncture
Solution Approach 1:
The patent employs nested lifting beams where an inner telescopic beam is housed within an outer beam, both surrounded by a common casing. This nesting arrangement allows the beams to extend to greater lengths while maintaining structural integrity through the shared casing that supports the juncture area.
Solution Approach 2:
The common casing acts as an intermediary structural element that surrounds both the inner and outer beams. It provides external support to the juncture where the inner beam extends beyond the outer beam, distributing and reducing the bending stresses that would otherwise concentrate at this vulnerable point.
2Strength
If a casing is added to surround both beams, then strength at juncture is improved, but device complexity increases
Solution Approach 1:
The common casing serves multiple functions simultaneously: it provides structural support to the juncture area, houses both the inner and outer telescopic beams, and reduces bending stresses. This multi-functionality consolidates what could be multiple separate components into a single integrated structure, reducing overall device complexity.
Solution Approach 2:
The patent merges the support function with the housing function by combining the casing that surrounds both beams into a single unified structure. This integration eliminates the need for separate support brackets or reinforcement elements, simplifying the overall design while maintaining strength at the juncture.
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 solution effectively increases the strength of telescopic lifting beams in their protruded position by autonomously adjusting to surround the juncture, mitigating bending forces and ensuring stable load support without complex or expensive modifications.
Implementation Method 1
A cylindrical casing with a pressure spring that surrounds both lifting beams, adjusting its position to support the juncture and absorb bending stresses
Data Source
AI summary
Patient lift systems having a telescoping lifting apparatus include a telescopically displaceable lifting beam and a fixed lifting beam. The telescopically displaceable lifting beam may be operable to extend out from the fixed lifting beam to a protruded position. A casing may be brought to surround both the telescopically displaceable lifting beam and the fixed lifting beam and extend a certain distance over both the telescopically displaceable lifting beam and the fixed lifting beam when the telescopically displaceable lifting beam is in the protruded position. A pressure spring may be situated within the casing between a top end of the casing, which may surround the telescopically displaceable lifting beam, and a spring support, which may attach to the fixed lifting beam.