Modular Sieve Sleeve for Adaptable Anchoring
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Solution Overview
Problem
Existing sieve sleeves for anchoring elements are inflexible and designed for specific borehole depths and anchoring element lengths, limiting adaptability to varying site conditions and increasing assembly complexity and hardening material usage.
Innovation Solution
A sieve sleeve with an approximately cylindrical design, open at both ends, allowing for on-site cutting and assembly with interchangeable base and closure elements, ensuring secure attachment and efficient distribution of hardening material, and featuring passage openings for mortar flow and centering of the anchoring element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sieve sleeves are designed with fixed length for specific borehole depths, then anchoring precision is improved, but adaptability to varying site conditions deteriorates
Solution Approach 1:
The sieve sleeve is divided into modular components: a reusable closure element and interchangeable sleeve sections of different lengths. This segmentation allows the closure element to be standardized while the sleeve length can be adapted by selecting different numbered sections (e.g., 100mm, 200mm, 300mm lengths), thus maintaining precision through standardized components while achieving adaptability through modular assembly.
Solution Approach 2:
The closure element is designed as a universal component that can be used with multiple sieve sleeve lengths and different anchoring element types. The standardized closure element features universal threading and sealing mechanisms that work across different sleeve configurations, allowing one closure element design to serve multiple functions across various borehole depths and anchoring requirements.
2Reliability
If sieve sleeves are designed for specific borehole depths, then anchoring reliability is improved, but device complexity increases due to multiple size variants
Solution Approach 1:
Instead of manufacturing completely different sieve sleeves for each borehole depth, the system segments the sleeve into a standardized closure element and interchangeable length sections. This reduces device complexity by reusing the same closure element design across multiple sleeve length variants, while maintaining reliability through standardized connection interfaces and sealing mechanisms.
Solution Approach 2:
The invention changes the parameter of sleeve length while keeping other critical parameters (closure element design, threading, sealing features) constant. By varying only the sleeve length parameter and maintaining standardized closure elements, the system achieves adaptability to different borehole depths without proportionally increasing overall device complexity.
3Manufacturing precision
If sieve sleeves are designed for specific anchoring element lengths, then mortar distribution precision is improved, but assembly complexity increases
Solution Approach 1:
The sieve sleeve is segmented into a closure element and modular length sections, where the closure element contains the mortar distribution control features. This allows the distribution precision mechanisms to be standardized in the closure element while the sleeve length is adjusted by adding or removing sections, thereby maintaining mortar distribution precision while reducing assembly complexity through standardized interfaces.
4Quantity of substance
If fixed-length sieve sleeves are used, then mortar mass usage is optimized for specific depths, but loss of substance increases due to excess hardening material for deeper holes
Solution Approach 1:
The sieve sleeve system transitions from fixed-length to dynamically adjustable length through modular assembly. The closure element and interchangeable sections allow the sieve sleeve length to be dynamically matched to the actual borehole depth and anchoring element length, ensuring that hardening material is used efficiently without excess, while the standardized closure element maintains consistent mortar distribution characteristics across different lengths.
Data Source
Figure 1~3
Figure 4~5
AI summary
The casing has a cylindrical casing, which is open at ends of the casing, where the cylindrical casing includes a number of passages in a lateral surface of the casing. A base unit is connected as a separate component with the cylindrical casing. A front closure unit (5) is provided with a middle opening, where the closure unit is connected with the ends of the casing, which are opposite to the base unit. The base unit and the front closure unit are connected from an inner side of the casing. An independent claim is also included for a method for manufacturing a perforated casing for an anchorage unit.