Crusher Hydraulic Accumulator Layout for Stable Crushing Force
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Solution Overview
Problem
Crushers experience significant wear and decreased longevity due to large load variations, which existing systems fail to adequately address.
Innovation Solution
A crusher system with a hydraulic system that includes an accumulator connected to a hydraulic cylinder via a hydraulic fluid conduit, designed to attenuate pressure variations, and a control system to manage hydraulic fluid flow, ensuring consistent crushing force and improved longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hydraulic system is used to adjust the gap between crushing surfaces, then the crusher can adapt to different crushing requirements, but large load variations cause wear and metal fatigue in the hydraulic components
Solution Approach 1:
The patent introduces a cushioning element (elastomeric material) between the crushing surfaces that absorbs and dampens load variations before they reach the hydraulic system. This beforehand cushioning protects the hydraulic components from shock loads and metal fatigue while maintaining the gap adjustment capability, thereby resolving the contradiction between adaptability and reliability
Solution Approach 2:
The elastomeric cushioning material acts as an intermediary between the crushing surfaces and the hydraulic system. It mediates the transmission of forces, filtering out harmful load variations while allowing the hydraulic system to maintain precise gap control, thus protecting hydraulic components without sacrificing adaptability
2Device complexity
If the hydraulic cylinder directly connects to the crushing surface for gap adjustment, then the system is simple, but pressure variations cause crushing force variations that reduce material processing quality
Solution Approach 1:
The elastomeric cushioning element provides beforehand cushioning that smooths out pressure variations from the hydraulic system before they reach the crushing surfaces. This maintains crushing force consistency and material processing quality while keeping the hydraulic system structure relatively simple, resolving the contradiction between device complexity and manufacturing precision
3Adaptability or versatility
If the gap between crushing surfaces is reduced to process smaller materials, then the crusher can handle finer materials, but the hydraulic system experiences larger pressure variations and load changes
Solution Approach 1:
The elastomeric cushioning element provides beforehand cushioning that absorbs pressure variations regardless of the gap setting or material size being processed. This allows the crusher to handle a wide range of material sizes while the cushioning element continuously dampens hydraulic pressure variations, resolving the contradiction between adaptability and pressure stability
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
Minimizes crushing force variations and enhances the lifespan of the crusher by effectively managing hydraulic pressure fluctuations.
Implementation Method 1
at least one accumulator connected to the hydraulic cylinder by means of at least one hydraulic fluid conduit for attenuating variations occurring in the hydraulic pressure of the hydraulic cylinder during operation of the crusher system
Implementation Method 2
The pressure drop across the hydraulic fluid conduit is proportional to the flow rate through the conduit and inversely proportional to the fourth power of the inner radius of the conduit
Data Source
Figure 1
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AI summary
In one aspect there is provided a crusher system (1) comprising a first crushing surface (6) and a second crushing surface (14), the two crushing surfaces (6, 14) being operative for crushing material between them, the crusher system further comprising a hydraulic system (16) which is operative for adjusting a gap (12) between the first crushing surface (6) and the second crushing surface (14) by adjusting the position of the first crushing surface (6) by means of a hydraulic cylinder (10) connected to said first crushing surface (6), wherein said hydraulic system (16) further comprises at least one accumulator (26) connected to the hydraulic cylinder (10) by means of a hydraulic fluid conduit (42), wherein the relation between the length (L) of the conduit (42) and the cross-sectional inner area (A) of the conduit (42) fulfills the condition: L/A < 425.