Removable Anchoring Device Using Segmented Bodies for Tool-Free Installation
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Solution Overview
Problem
Existing anchoring devices for rock or concrete walls are often non-removable, difficult to install without tools, and have a large diameter due to mechanical stress constraints, making them cumbersome for climbing and lifting applications.
Innovation Solution
A removable anchoring device with a radially expandable female body and a cylindrical male body, featuring a stop member for secure fixing and a digital grip for easy maneuvering, allowing for quick installation and removal with one hand, and a load suspension element for improved robustness and lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the male body has a large diameter to withstand mechanical stresses, then the strength is improved, but the device becomes cumbersome and difficult to install/remove
Solution Approach 1:
The device is divided into two separate bodies: a female body that remains in the borehole and a male body that can be independently inserted and removed. This segmentation allows the male body to have sufficient strength while being slender and easy to handle, as it does not need to support the entire device structure.
Solution Approach 2:
The male body is designed to slide within the female body, creating a nested structure. This allows the male body to be inserted or extracted from the female body without removing the entire anchoring device from the borehole, facilitating easy installation and removal of the load-bearing component.
2Stability of the object's composition
If the female body is long to ensure coaxiality of the rod and hole, then the stability is improved, but the device complexity increases
Solution Approach 1:
The male body includes self-aligning features such as a conical leading end that automatically centers itself within the female body during insertion. This self-alignment mechanism ensures coaxiality between the rod and hole without requiring an excessively long female body or complex external alignment tools.
3Ease of operation
If the rod diameter is small to match the borehole diameter, then the ease of installation is improved, but the strength to withstand mechanical stresses decreases
Solution Approach 1:
The female body is pre-installed in the borehole and expanded to create a secure anchor point before the male body is inserted. This preliminary action allows the male body to be slender and easy to insert, while the pre-positioned female body provides the necessary strength and load-bearing capacity.
4Reliability
If the device is designed for secure fixing under heavy loads, then the reliability is improved, but the ease of removal without tools deteriorates
Solution Approach 1:
The connection between the male and female bodies is designed to be dynamically controllable. Under normal conditions, the elastic element maintains a secure locked position for reliable load-bearing. However, by applying a specific manual force or action to the male body, the user can override this locking mechanism and easily extract the male body from the female body without requiring tools.
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 device provides secure and efficient anchoring with reduced diameter requirements, allowing for easier installation and removal without tools, even under heavy loads, and minimizes stress on the anchoring device, enhancing its usability in climbing and lifting applications.
Implementation Method 1
an elastic compression member engaged on the male body and mounted in compression between the abutment of the female body and the abutment of the male body, in order to bias the male body and the female body in the direction of engagement of the expansion head in the radially expandable zone
Implementation Method 2
a female body provided with a radially expandable front zone, intended to be introduced into the borehole
Implementation Method 3
which produces a bond by adhesion and ensures the maintenance of the stud in the hole
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a removable anchoring device provided for being inserted in a bore hole (F) provided in a wall (P) and for bearing a mechanical load, includes: a socket body (1) having a radially expandable front area (10), provided for being placed in the bore hole, and a rear abutment (11), provided for being outside the bore hole; and a plug body (2) that is slidably inserted into the socket body (1) and comprises an expansion head (20) on the front end of the plug body. Said plug body (2) comprises: a rear abutment (21) provided for being outside the bore hole; and a resilient compression member (3) mounted, via compression, between the abutment (11) of the socket body (10) and the abutment (21) of the plug body so as to bias the plug body and the socket body in the direction of the insertion of the expansion head within the radially expandable area. The plug body (2) has a stop member (24) that determines a length of penetration into the bore hole.