Mobile Crane Hose Guide Using Flexurally Elastic Sheet
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Solution Overview
Problem
Existing mobile crane hose guide systems are difficult to install and bulky, leading to uncontrolled hose bulges or loops at joints, which can cause damage, and require separate adjustment mechanisms for angular position changes.
Innovation Solution
A flexurally elastic sheet is used to guide hoses between crane booms, eliminating the need for specific tensioning devices and adjustment mechanisms, as it flexes to accommodate changes in angular position, preventing hose pinching and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a U-shaped hose guide with separate hydraulic adjustment mechanism is used, then hose damage from uncontrolled bulges is prevented, but the device becomes complex and difficult to install
Solution Approach 1:
The hose guide arrangement is designed to automatically adapt to angular position changes of the crane booms without requiring separate adjustment mechanisms. The flexible material and tensioning device work together to self-adjust the hose guide position as the crane booms move, eliminating the need for complex hydraulic adjustment systems while maintaining hose protection.
Solution Approach 2:
The hose guide arrangement uses flexible material that can dynamically change its configuration as the crane booms move between different angular positions. The tensioning device allows the hose guide to dynamically adjust its tension and position, providing continuous adaptation to the changing geometry without requiring complex mechanical adjustment mechanisms.
2Reliability
If a flexible hose guide arrangement with long pins is used, then hose pinching is prevented, but the device becomes bulky
Solution Approach 1:
The hose guide arrangement uses a flexible material (such as a rubber or polymer sheet) instead of rigid pins and bulky mechanical structures. This flexible film-like component can bend and conform to the changing geometry of the crane booms while maintaining hose protection, significantly reducing the volume and bulk of the hose guide system.
Solution Approach 2:
The hose guide arrangement changes its physical parameters (shape, position, tension) in response to the angular position changes of the crane booms. The flexible material allows the hose guide to change its curvature and orientation dynamically, providing effective hose protection without requiring the fixed, bulky structure of long pins.
3Reliability
If multiple separate hose guides are used for different angular positions, then hose damage is prevented, but the device complexity and installation difficulty increase
Solution Approach 1:
The hose guide arrangement is designed as a universal system that functions across the entire range of angular positions of the crane booms. Instead of requiring separate hose guides for different positions, this single multi-functional arrangement adapts to all angular configurations through its flexible material and tensioning device, simplifying both manufacture and installation.
Solution Approach 2:
The invention combines the functions of multiple separate hose guides into a single integrated arrangement. The flexible material and tensioning device work together as a unified system that provides continuous hose protection throughout the full range of motion, eliminating the need for multiple separate components and reducing installation complexity.
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 provides a simple, low-bulk hose protection system that effectively prevents hose pinching across a wide range of crane boom movements, ensuring hose integrity and protection from external influences.
Implementation Method 1
At least one hose guide arrangement (6) made of a single piece of flexurally elastic sheet (6) is fastened to the two crane booms (3, 4)
Data Source
AI summary
A mobile crane has at least two crane booms which are connected together by a joint such that the angular position with respect to each other can be adjusted. At least one hose between the crane booms, and the hose is exposed in the region of the joint in at least one angular position of the crane booms. At least one flexurally elastic sheet is connected with the at least one hose or covers it at least in the exposed region and can flex when the angular position of the at least two crane booms is changed. The at least one flexurally elastic sheet can be moved into or respectively out of one of the crane booms upon a change in the angular position of the crane booms.