Composite Cushioning Slides for Impact Hammer Friction Reduction
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Solution Overview
Problem
Machinery such as rock breakers and impact hammers face challenges with high friction and shock loads due to repetitive impacts, leading to increased wear, noise, and operational costs, with existing lubricants failing to effectively reduce friction in dusty environments and high-pressure applications.
Innovation Solution
The implementation of composite cushioning slides with a low-friction exterior layer and a shock-absorbing interior layer on reciprocating components, specifically designed for impact hammers, to minimize friction and absorb shock loads, reducing noise and wear while maintaining operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wet lubricant coating is used on contact surfaces, then friction is reduced, but dust adheres to the lubricant creating higher friction and abrasion
Solution Approach 1:
The invention changes the physical state of the lubricant from wet to dry form. The dry lubricant coating provides low friction without the adverse effect of dust adhesion that occurs with wet lubricants, directly resolving the contradiction between reducing frictional loss and maintaining reliable interface performance in dusty environments.
Solution Approach 2:
The invention replaces the wet lubricant mechanical system with a dry lubricant coating system. This substitution eliminates the fluid medium that causes dust adhesion while maintaining the lubricating function through solid-state friction reduction mechanisms.
2Reliability
If dry lubricant is used on contact surfaces, then dust adhesion is avoided, but performance on low contact area high pressure surfaces is insufficient
Solution Approach 1:
The invention uses a composite material structure combining a hard wear-resistant base material with a soft conformable lubricant layer. This composite approach allows the soft layer to conform to surface irregularities and maintain contact under high pressure, while the hard base provides structural integrity and wear resistance, resolving the contradiction between reliability and friction reduction.
Solution Approach 2:
The invention applies different material properties to different layers of the cushioning slide. The exterior layer has low friction properties for reducing energy loss, while the interior layer has shock-absorbing properties for maintaining reliability under high pressure, with each layer optimized for its specific function.
3Strength
If reinforced apparatus construction is used to withstand impact forces, then structural strength is improved, but apparatus weight and cost increase
Solution Approach 1:
The invention introduces a cushioning slide as an intermediary element between the reciprocating component and the apparatus structure. This mediator absorbs and distributes impact forces, protecting the main structure from direct shock loads and allowing for lighter construction while maintaining sufficient strength.
Solution Approach 2:
The cushioning slide itself is made from composite material combining wear resistance and shock absorption properties, providing multi-functional protection that reduces the need for heavy reinforcement of the main apparatus structure.
4Object-generated harmful factors
If cushioning slides are installed on reciprocating components, then friction and noise are reduced, but device complexity increases
Solution Approach 1:
The cushioning slide is designed as a segmented multi-layer component with each layer performing a specific function. This segmentation allows for optimized performance of each function (friction reduction, shock absorption) while keeping the overall addition to device complexity manageable through modular design.
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 significantly reduces noise levels and frictional losses, allowing for lighter, cheaper apparatus construction while maintaining impact force, and extends the working life of machinery by absorbing shock loads, achieving a noise reduction of 15 dBA and friction loss reduction of 40%.
Implementation Method 1
said first layer being formed from a material of predetermined friction and/or abrasion resistance properties
Implementation Method 2
said second layer at least partially formed from a shock-absorbing material having predetermined shock absorbing properties
Data Source
AI summary
An apparatus (1) with a reciprocating component (3) fitted with composite cushioning slides (13) on an exterior surface (8, 9). The reciprocating component (3) is movable along a reciprocation path and the composite cushioning slide (13) includes an exterior first layer (14) and an interior second layer (15). The first layer (14) is formed with an exterior surface (16) configured and orientated to come into sliding contact with a containment surface (7) of the apparatus (1) during the reciprocating movement of the reciprocating component (3), the first layer (14) is formed from a material of predetermined friction and/or abrasion resistance properties. The interior second layer (15) is located between the first layer (14) and reciprocating component (3) and is formed from a shock-absorbing material having predetermined shock absorbing properties.