Friction Bolt Expansion Adaptor With Threaded Sleeve
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Solution Overview
Problem
Friction tube anchors have limited versatility and effectiveness in various ground conditions, particularly in brittle and loose soils, where they struggle to provide a secure hold and sufficient length.
Innovation Solution
Incorporating a sleeve-like sleeve that allows for the connection of multiple expandable tubes, inflation adapters, and additional components like bolts, enabling increased length, improved hold, and post-expansion attachment options, including screws and eyebolts, through threaded sections and seals for enhanced functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single expandable tube is used in the friction tube anchor, then the structure remains simple, but the effective length is limited and the hold in brittle or loose ground is insufficient
Solution Approach 1:
The friction tube anchor is divided into multiple expandable tube sections that can be coupled together in series. Each tube section can be expanded independently to provide anchoring force, while the segmented structure allows achieving greater effective lengths by connecting multiple sections through the sleeve-like sleeve component.
2Adaptability or versatility
If the friction tube anchor is designed for a single function, then the device complexity is low, but the versatility in different ground conditions and applications is limited
Solution Approach 1:
The sleeve-like sleeve is designed with multiple functional capabilities: it serves as a coupling mechanism to connect multiple tube sections, provides threading for attaching various components (bolts, eyebolts, plates), and enables both expansion and post-expansion modification functions. This multi-functional design allows the same component to adapt to different ground conditions and application requirements without increasing overall device complexity.
3Adaptability or versatility
If additional components are attached after expansion, then the functionality is enhanced, but the installation process becomes more complex
Solution Approach 1:
The sleeve-like sleeve is pre-equipped with threaded sections and attachment points during the initial expansion phase. This preliminary preparation allows components such as bolts, eyebolts, and plates to be easily attached after expansion without requiring complex additional installation procedures. The threading and coupling mechanisms are already in place, facilitating quick and simple component attachment.
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 sleeve-like sleeve enhances the versatility and reliability of friction tube anchors by allowing for increased length, improved grip in challenging ground conditions, and facilitates easy attachment of additional components, ensuring secure fixation and efficient expansion using pressurized fluid.
Implementation Method 1
which is inserted into a borehole and expanded by increasing the pressure inside the folded tube, so that the outer surface of the tube rests against the inner surface of the borehole and the anchor so fixed in the borehole
Implementation Method 2
the friction tube anchor is fixed in the borehole by friction and a positive fit
Implementation Method 3
A friction tube anchor has a tube which can be expanded under the action of a pressure medium and which is attached to a sleeve, which is screwed into a threaded portion of a sleeve-like sleeve
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A friction bolt comprises a tube (1) which can be expanded under the action of a pressure medium and which is fastened to a sleeve (6). The sleeve (6) is screwed into a section (13) of a sleeve-like socket (7) that is provided with a thread and sealed with respect to the inside of the section (13) by means of a ring seal (11). The sleeve-like socket (7) comprises a further section (14) provided with a thread, into which section can be selectively screwed a further expandable tube (1), or an adaptor for feeding in the pressure medium to expand the tube (1), or an anchor bolt, for example an eyebolt.