Lateral Sway Brace Fitting With Conical U-Bolt Pipe Anchoring
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Solution Overview
Problem
Existing seismic bracing systems for building components like plumbing and sprinkler systems face challenges in efficiently securing sway brace pipes to service pipes without requiring pipe repositioning or disassembly, and often rely solely on friction, which can lead to bending moments and limited size compatibility.
Innovation Solution
A lateral sway brace fitting composed of a U-bolt with conical tips, stamped hooks, and torque-limiting nuts that allows for secure engagement of sway brace pipes to service pipes without pipe repositioning, using a U-bolt that wraps around the service pipe and hooks that can accommodate multiple sizes, with swivel nuts for adjustment and torque limitation to prevent overtightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing seismic bracing systems rely solely on friction to secure sway brace pipes to service pipes, then the system is simple to install, but the connection strength is insufficient and bending moments occur
Solution Approach 1:
The bracing system is divided into distinct functional components: the U-bolt for mechanical attachment, the conical tips for penetration and anchoring, and the friction surface for load distribution. This segmentation allows each component to optimize its specific function while working together to achieve strong, bending-moment-free connection.
Solution Approach 2:
Different regions of the U-bolt serve different purposes: the conical tips are hardened for penetration and anchoring into the service pipe, while the broad flat surface provides friction-based load distribution. This local differentiation of properties (hardness, surface area) resolves the contradiction between connection strength and system simplicity.
2Ease of operation
If existing bracing systems require pipe repositioning or disassembly for installation, then the connection can be secure, but the installation time and complexity increase
Solution Approach 1:
The conical tips are pre-formed and hardened during manufacturing, ready to penetrate the service pipe wall immediately upon installation. This preliminary preparation eliminates the need for pipe repositioning or disassembly during installation, allowing the brace to be installed in its final position while maintaining secure connection.
Solution Approach 2:
The conical tips automatically penetrate and anchor into the service pipe during the installation process itself, without requiring separate preparation steps. The installation action serves dual purposes: positioning the brace and creating the mechanical anchor, thereby reducing installation time and complexity.
3Adaptability or versatility
If existing bracing systems use fixed-size clamps, then the manufacturing is simple, but the adaptability to different pipe sizes is limited
Solution Approach 1:
The U-bolt design incorporates adjustable parameters including the angle and dimensions of the conical tips, the width and shape of the friction surface, and the overall U-bolt geometry. By varying these parameters, a single basic design can accommodate multiple pipe sizes while maintaining secure connection, resolving the contradiction between adaptability and design complexity.
Solution Approach 2:
The U-bolt with conical tips serves multiple functions simultaneously: it provides mechanical attachment, creates penetration anchors, distributes friction loads, and adapts to different pipe sizes. This multi-functionality allows a single component design to replace multiple size-specific clamps, enhancing versatility without proportionally increasing complexity.
4Strength
If torque is increased to improve connection security, then the connection strength improves, but overtightening and damage risks increase
Solution Approach 1:
The conical tips are designed to penetrate only partially into the service pipe wall, creating sufficient mechanical anchor without requiring excessive tightening torque. This partial penetration achieves the necessary connection strength while avoiding overtightening damage, resolving the contradiction between strength and harm prevention.
Solution Approach 2:
The potential harm of excessive torque is converted into benefit by designing the conical tips to engage the pipe wall at optimal penetration depth. The friction surface area is sized to distribute loads appropriately, so that the tightening process naturally achieves secure connection without risking damage, transforming the torque application from potentially harmful to beneficial.
Data Source
AI summary
A sway brace fitting clamp is used for lateral bracing of sprinkler or other types of pipe (designated the service pipe) to a structure, to prevent movement of the service pipe perpendicular to the axis of a sway brace relative to the structure to which it is attached. The sway brace fitting clamp includes a body which fits around the service pipe, and a pair of hooks that are coupled to the body, for hooking the sway brace. The nuts may be tightened to pull the sway brace into contact with the service pipe, or otherwise firmly clamping the sway brace and the service pipe together.