Holder Assembly Radial Expansion and Lubrication for Pick Wear
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Solution Overview
Problem
Existing picks used in industries like asphalt milling, mining, and construction experience rapid wear and degradation due to the harsh conditions, leading to reduced operational efficiency and increased maintenance costs.
Innovation Solution
A holder assembly with a connection block and extension element, featuring an attachment mechanism that radially expands to secure the pick shank, includes a lubricant reservoir and wear-resistant impact tip, enhancing the pick's durability and attachment to the milling drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If picks are used in harsh conditions for asphalt milling, mining, and construction, then operational capability is maintained, but rapid wear and degradation occur reducing operational efficiency
Solution Approach 1:
The patent applies preliminary action by pre-installing a lubricant reservoir within the holder assembly that automatically lubricates the pick shank interface during operation. This preliminary preparation of lubrication reduces wear before significant degradation occurs, extending pick life and maintaining operational efficiency without requiring frequent maintenance interruptions.
Solution Approach 2:
The patent introduces an intermediary lubrication system between the pick shank and holder assembly. The lubricant reservoir and delivery mechanism act as a mediator that reduces direct friction and wear between metal surfaces, thereby protecting the pick from rapid degradation while maintaining continuous operational capability.
2Loss of time
If picks experience rapid wear and degradation, then maintenance frequency increases, but operational efficiency decreases
Solution Approach 1:
The holder assembly incorporates a self-service lubrication system where the lubricant reservoir automatically delivers lubricant to the pick shank interface during operation. This self-lubricating mechanism reduces wear without requiring external intervention or frequent maintenance, thereby minimizing maintenance time and preserving operational efficiency.
3Reliability
If attachment mechanism is secured to milling drum, then pick stability is improved, but attachment complexity increases
Solution Approach 1:
The attachment mechanism is segmented into modular components: a connection block with block bore, an extension element with central extension bore, and a lubricant reservoir. This segmentation allows each component to perform its specific function independently while simplifying the overall attachment process and reducing complexity compared to integrated designs.
Solution Approach 2:
The holder assembly design incorporates multi-functionality where the connection block and extension element serve both structural attachment purposes and lubricant delivery functions. The block bore and central extension bore provide both mechanical support and lubricant flow paths, reducing the need for separate components and simplifying the overall attachment 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
The solution extends the life of the picks by providing a secure attachment and lubrication, reducing wear and tear, thereby improving operational efficiency and extending maintenance intervals.
Implementation Method 1
an attachment mechanism disposed within the central extension bore of the extension element and disposed proximate to the second end of the assembly
Implementation Method 2
A holder assembly with a connection block and extension element, featuring an attachment mechanism that radially expands to secure the pick shank, includes a lubricant reservoir and wear-resistant impact tip
Data Source
AI summary
In one aspect of the invention, a holder assembly comprises a connection block having a block bore extending from a first opening proximate a first end of the assembly to a second opening proximate a second end of the assembly. The block is adapted for connection to a driving mechanism. An extension element is disposed in the block bore and protrudes from the first opening of the block bore. The extension element comprises a central extension bore having a longitudinal length. An attachment mechanism is disposed within the central extension bore of the extension element and is disposed proximate the second end of the assembly.