Dust Extraction Adapter Locking Structure for Rock Drilling
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Solution Overview
Problem
Existing drilling tools face challenges in securely connecting the cover element to the base body and efficiently transporting drill cuttings away from the borehole during the drilling process, particularly in rock drilling applications where the tool is subjected to percussive and rotational movements.
Innovation Solution
A drilling tool design featuring a transport channel radially arranged between the cover element and the base body, with a gap allowing for secure angular alignment and a suction system to collect drill cuttings, utilizing a sleeve element for enhanced connection and dust management, and a suction adapter for detachable connection to a suction device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cover element is designed with a gap to allow assembly, then the ease of manufacture is improved, but the structural integrity and reliability of the connection between cover element and base body deteriorates
Solution Approach 1:
The cover element is segmented with a gap that allows it to be assembled around the base body and transport channel, then closed to form a complete protective structure. This segmentation enables easier manufacturing and assembly while maintaining structural integrity when closed.
Solution Approach 2:
The cover element with its gap allows the base body and transport channel to be nested within it during assembly. The gap provides the necessary clearance for this nesting arrangement, facilitating assembly while the closed structure maintains reliability.
2Productivity
If the transport channel is radially arranged between the cover element and base body, then the productivity of drill cutting removal is improved, but the device complexity increases
Solution Approach 1:
The transport channel is arranged radially between the cover element and base body, utilizing the radial space efficiently. This radial configuration optimizes the flow path for drill cuttings, improving removal efficiency while utilizing the existing structural space without adding significant complexity.
3Adaptability or versatility
If the cover element is arranged completely outside the base body, then the adaptability of the design is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The cover element is designed with an asymmetric gap configuration that allows it to be positioned completely outside the base body during assembly. This asymmetric design provides flexibility in the overall structure while the gap tolerance compensates for alignment variations, reducing the stringency of manufacturing precision requirements.
Data Source
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Figure 1b
Figure 1c
AI summary
The invention relates to a dust extraction adapter for a drilling tool, comprising a housing, wherein the housing has a dust extraction interface for the detachable connection of a dust extraction device to the dust extraction adapter, and a tool connection unit for axially fixing the dust extraction adapter to the drilling tool. It is proposed that the housing have a locking mechanism, wherein the tool connection unit can be locked to the housing of the dust extraction adapter via the locking mechanism.