Camming Clamp Textile Ring Structure for Curved Fissure Placement
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Solution Overview
Problem
Existing camming chocks are cumbersome and difficult to use, especially in curved fissures, and the mechanical connection between the head and annular end is inefficient, leading to challenges in ease of installation and maintenance.
Innovation Solution
A camming clamping device with a mechanical connection using a textile material ring that forms at least two legs with loops, connected by a connecting portion, which attaches to the head and annular end, ensuring mechanical continuity without crimping or splicing, and allows for easy replacement of the wire element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a steel cable is used to connect the head and annular end, then mechanical continuity is ensured, but the device becomes cumbersome and difficult to install in curved fissures
Solution Approach 1:
The patent changes the material parameter from steel cable to textile material (such as Dyneema), which fundamentally alters the flexibility and handling characteristics. This parameter change enables the connection element to bend and conform to curved fissures while maintaining sufficient tensile strength, directly resolving the contradiction between ease of installation and device complexity
Solution Approach 2:
The patent employs a flexible textile material instead of a rigid steel cable. This flexible material can be easily maneuvered into curved fissures and adapted to irregular rock surfaces, eliminating the cumbersome nature of steel cables while maintaining the necessary mechanical continuity between the head and annular end
2Ease of manufacture
If the cable ends are crimped in the head, then mechanical connection is achieved, but the manufacturing process becomes complex and replacement is difficult
Solution Approach 1:
The patent segments the connection system into modular components: the textile element with pre-formed loops at its ends, and the head with corresponding attachment features. This segmentation eliminates the need for crimping operations during assembly - the loops simply engage with the head's attachment mechanism. Consequently, manufacturing becomes simpler and replacement is achieved by simply detaching and reattaching the modular element, directly resolving both contradictions
3Strength
If a rigid metal rod is used to connect head and annular end, then mechanical strength is improved, but the chock cannot be installed easily in curved fissures
Solution Approach 1:
The patent changes the material parameter from rigid metal to flexible textile material. This parameter change enables the connection element to adapt to curved fissures and irregular geometries while maintaining sufficient tensile strength through the high-strength properties of materials like Dyneema, directly resolving the contradiction between mechanical strength and ease of installation
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 solution provides a more efficient, lightweight, and easier-to-manufacture camming clamping device that is easier to install and maintain, with improved mechanical strength and reduced manufacturing complexity.
Implementation Method 1
a spring (10) functionally coupled to the at least one cam (3) to bias the at least one cam (3) to the extended position
Implementation Method 2
at least one wire element (5) mechanically connecting the head (1) and the annular end (2), the at least one wire element (5) being in the form of a ring
Data Source
AI summary
A camming clamping device comprises a head provided with an anchor point. A cam is installed rotatable around at least one shaft between a retracted position and an extended position. A spring is functionally coupled to the cam to bias the at least one cam to the extended position. An annular end is mechanically coupled to the head. A wire element connects the head and the annular end. The wire element is in the form of a ring. The ring is folded into a U-shape with two legs joined by a central portion. The two legs are fixed to the anchor point. Four strands of the wire element connect the head and the annular end. An actuating system has a trigger installed slidingly and configured to selectively engage the retracted position.