Adjustable Camming Clamp Rod for Rigid Crack Placement
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Solution Overview
Problem
Existing camming chocks face issues with rigidity and ease of installation, particularly when using textile straps instead of steel cables, due to complex assembly and shorter lifespan, leading to difficulties in precise positioning and maintenance.
Innovation Solution
A camming clamping device with an adjustable telescopic rod and a clamp system that ensures rigidity and ease of assembly, featuring a telescopic rod with adjustable length and a clamp to secure the position, allowing for precise installation and simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a textile strap is used instead of a steel cable to connect the head to the annular end, then the device becomes lighter and easier to handle, but the lifespan is reduced and the rigidity is insufficient for precise positioning
Solution Approach 1:
The patent changes the material parameter from textile strap to wire element, which maintains the lightweight advantage while significantly improving lifespan and rigidity. The wire element has higher tensile strength and durability characteristics.
Solution Approach 2:
The patent employs a composite structure combining a wire element with a rigid rod. The wire element provides flexibility and lightness, while the rigid rod provides structural support and positioning accuracy, creating a composite system that balances multiple requirements.
2Stability of the object's composition
If a rigid metal rod is used to connect the head to the annular end, then the structural rigidity is improved for precise positioning, but the device becomes more complex and harder to install in curved cracks
Solution Approach 1:
The connection structure is segmented into multiple components: a wire element for flexibility, a rigid rod for positioning, and a clamp for assembly. This segmentation allows each component to perform its specific function optimally while simplifying the overall installation process.
Solution Approach 2:
The patent introduces an adjustable rigid rod that can be extended or retracted, and a clamp that can be opened or closed. This dynamic capability allows the device to adapt to curved cracks during installation, then maintain rigid positioning once deployed.
3Ease of manufacture
If the rod length is fixed, then the manufacturing is simpler, but the adaptability to different crack sizes and shapes is reduced
Solution Approach 1:
The rod is designed with adjustable length capability, allowing it to be extended or retracted to match different crack dimensions. This dynamic adjustment maintains manufacturing simplicity while significantly improving adaptability to various rockface conditions.
Solution Approach 2:
The adjustable rod and clamp combination creates a universal connection system that can accommodate multiple crack sizes and shapes, allowing a single device design to serve multiple installation scenarios.
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 improved rigidity and ease of installation, enabling precise placement in cracks and facilitating easier maintenance by allowing for adjustable length adjustment of the rod, thus enhancing the device's functionality and longevity.
Implementation Method 1
a spring coupled to the at least one cam to bias the at least one cam to the extended position
Implementation Method 2
the rod is a rod of adjustable length to apply a tractive force to the wire element from the head to the annular end
Implementation Method 3
at least one clamp is configured to block the rod at a required length by blocking the position of the distal part with respect to the proximal part
Data Source
AI summary
A camming clamping device comprises a head with a cam installed swivelling around a pivot shaft between retracted and extended positions. An annular end is mechanically coupled to the head. A rod of variable length connects the head with an annular end designed to receive a carabiner. A wire element made from textile material passes through the rod to connect the head and the annular end. A trigger is installed slidingly to selectively engage the retracted position of the cam. An adjustment device of the length of the rod defines at least a distance between the head and the annular end that is greater than a threshold distance to stretch the wire element and compress the rod in the first direction.