Edge Straightening Device Fastening Mechanism for Vibratory Rollers
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Solution Overview
Problem
Existing edge straightening devices for bituminous roadways face challenges in securely and efficiently fastening and detaching straightening tools due to irregular boundary edges, which complicates the alignment and connection of road surfaces during the compaction process.
Innovation Solution
An edge straightening device with a fastening means featuring a fixing head with three star-shaped fixing elements that provide a three-point bearing, allowing secure attachment and easy detachment of the straightening tool from a freely rotatable bearing hub, utilizing a central bolt for fixation and impact surfaces for release, ensuring reliable and quick operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a straightening tool is fastened securely to a bearing hub, then reliability of the connection is improved, but ease of operation for detachment and tool exchange deteriorates
Solution Approach 1:
The fastening means is divided into separate components: a fastening body with fixing elements and a detachable fastening element. This segmentation allows the tool to be securely fastened during operation while enabling quick detachment by removing the fastening element, thus resolving the contradiction between connection reliability and ease of detachment.
Solution Approach 2:
The fastening system transitions from a static permanent connection to a dynamic detachable connection. The fastening element can be inserted to secure the tool during operation and removed for quick tool exchange, providing adaptability between secure fastening and easy detachment states.
2Adaptability or versatility
If multiple straightening tools are exchanged frequently, then adaptability to different edge conditions is improved, but loss of time for fastening and detachment accumulates
Solution Approach 1:
By separating the fastening means into a permanent fastening body and a removable fastening element, tool exchange is reduced to simply inserting or removing the fastening element rather than completely assembling or disassembling the connection, significantly reducing tool exchange time while maintaining adaptability.
Solution Approach 2:
The fastening body is pre-configured with fixing elements and bearing surfaces that automatically align and secure the tool when the fastening element is inserted. This preliminary preparation eliminates the need for complex alignment procedures during tool exchange, reducing time loss.
3Strength
If a complex fastening system is used to secure heavy straightening tools, then strength of the connection is improved, but device complexity increases
Solution Approach 1:
The fastening system is segmented into a simple fastening body with fixed fixing elements and a separate fastening element. This segmentation maintains strong connection through the fixing elements while keeping each component simple in structure, avoiding the need for complex multi-component fastening systems.
Solution Approach 2:
The fixing elements and bearing surfaces are designed to automatically engage and secure the tool when the fastening element is inserted, without requiring additional adjustment or complex mechanisms. The system self-secures the tool through the geometric arrangement of the bearing surfaces and fixing elements.
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 enables secure and efficient fastening and detachment of straightening tools, ensuring even alignment and reducing laborious manual processes, while allowing for easy tool exchange and cost-effective production.
Implementation Method 1
The three fixing elements push the straightening tool (2) into the press fit under the action of force
Implementation Method 2
the straightening tool and the rotatable bearing hub rotating due to the frictional connection between the straightening tool and the road surface or road edge
Data Source
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AI summary
The present invention relates to an edge straightening device, in particular for a vibratory roller for processing bituminous pavements, with a straightening tool that can be attached to a freely rotatable bearing hub by means of a fastening device in a press fit, wherein the fastening device has a fixing head with three fixing elements that can be brought into operative contact with the bearing hub such that the three fixing elements press the straightening tool into the press fit. Furthermore, the present invention relates to a fastening device for a straightening tool of an edge straightening device, in particular a vibratory roller for processing bituminous pavements, which can be attached to a freely rotatable bearing hub in a press fit, wherein the fastening device has a fixing head with three fixing elements that can be brought into operative contact with the bearing hub such that the three fixing elements press the straightening tool into the press fit.