Telescopic Cylinder Collar With Contoured Guide For Side Load Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional collars for telescopic cylinders in tipper vehicles are prone to damage and misalignment due to excessive side loads, leading to seizures and breakages, and existing solutions either increase weight and cost or fail to prevent misalignment when the cylinder is extended.
Innovation Solution
A collar with a contoured first annular element, a movable second annular element with pins, an O-ring, and a curved internal annular guide made of plastic materials like polyoxymethylene, which absorbs side loads and facilitates alignment of the cap with the shaft, preventing seizures and breakages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional collar is used to support the telescopic cylinder, then the structure is simple and cost-effective, but it is prone to damage and misalignment due to excessive side loads
Solution Approach 1:
The collar is divided into multiple annular elements (first annular element, second annular element, third annular element) that can move independently relative to each other. This segmentation allows each element to absorb and distribute side loads separately, preventing concentrated stress that would damage a conventional unified collar structure.
Solution Approach 2:
The collar transitions from a static rigid structure to a dynamic structure where the second annular element can move axially and rotate relative to the first and third annular elements. This dynamic capability allows the collar to adapt to misalignments and absorb side loads through controlled movements rather than rigid resistance.
2Reliability
If the collar structure is made more robust to prevent damage, then reliability improves, but weight and cost increase
Solution Approach 1:
The collar uses flexible annular elements that can deform and move relative to each other to absorb side loads and misalignments. This flexible approach provides protection against damage without requiring a heavier rigid structure, as the flexibility itself is the protective mechanism.
Solution Approach 2:
The second annular element acts as an intermediary between the first and third annular elements, absorbing side loads and misalignments through its own movement. This intermediary element protects the main collar structure from direct exposure to excessive forces, preventing damage without requiring the entire collar to be heavily reinforced.
3Adaptability or versatility
If a fixed rigid collar is used, then manufacturing is simple, but it cannot accommodate lateral inclinations and misalignments
Solution Approach 1:
The collar incorporates dynamic elements that allow movement and rotation to accommodate lateral inclinations and misalignments. The second annular element can move axially and rotate relative to the fixed first and third elements, providing adaptability without requiring a completely complex reconfigurable structure.
Solution Approach 2:
The collar merges fixed support elements (first and third annular elements) with a movable intermediate element (second annular element) to create a structure that combines the simplicity of fixed mounting with the adaptability of movable components. This merging allows the system to achieve both stability and flexibility.
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 collar minimizes collisions and misalignments, prevents shaft damage, and allows for easy retraction and alignment, ensuring the integrity of the telescopic cylinder while being lightweight and cost-effective.
Implementation Method 1
an O-ring, made of rubber, surrounding the jacket of the cap and interposed between the movable second annular element and a fixed third annular element, and interacting with both
Implementation Method 2
said first annular element has, at an internal circumference thereof, an annular guide with a curved internal circumferential surface, said internal circumferential surface having, at each point of its circumference, a vertical cross-section with a shape that is concave as it progresses toward an outside of said collar
Data Source
AI summary
A collar for a telescopic cylinder with a cap includes the terminal portion of the cap that presents the opening of the cap, such that the collar includes in the following order a first annular element with a contoured profile, which surrounds the terminal portion and is welded thereto, and a second annular element, which can move with respect to the terminal portion and to the first annular element. The collar further includes an O-ring, made of rubber, surrounding the terminal portion and a third annular element surrounding the terminal portion and welded thereto. The first annular element has, at its internal circumference, an annular guide with a curved internal circumferential surface, the internal circumferential surface having, at each point of its circumference, a vertical cross-section with a shape that is concave as it progresses toward the outside of the collar.