Split-Plunger Threaded Rod Locking for Multi-Diameter Anchoring
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Solution Overview
Problem
Existing technologies lack a reliable and efficient method to securely support threaded rods of different diameters in construction applications, particularly in scenarios where the size of the threaded rod is unknown at the time of anchor installation.
Innovation Solution
A threaded rod locking device with a housing and a plunger system that includes first and second plunger halves with different threaded sections, allowing the device to accommodate and securely engage threaded rods of various diameters by transitioning between open and closed configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple anchor sizes are used to accommodate threaded rods of different diameters, then the device can support various rod sizes, but the device complexity and inventory requirements increase
Solution Approach 1:
The anchor device is designed with a single housing containing multiple threaded sections with different thread pitches, allowing one anchor to accommodate multiple threaded rod diameters. The plunger mechanism with corresponding threaded sections can engage with rods of varying sizes through a unified interface, eliminating the need for multiple specialized anchors.
Solution Approach 2:
The plunger is designed to be movable within the housing, transitioning between retracted and extended positions. This dynamic movement allows the plunger to adapt its position based on the diameter of the inserted threaded rod, enabling a single anchor to securely hold rods of different sizes without requiring multiple static anchor configurations.
2Device complexity
If a single anchor size is used for all threaded rod diameters, then the device complexity is reduced, but the ability to securely engage different rod sizes is compromised
Solution Approach 1:
The internal structure of the anchor is segmented into multiple functional zones: the housing with internal bore, the plunger with split halves, and multiple threaded sections with different pitch values. This segmentation allows each component to perform its specific function while working together to achieve universal compatibility with various threaded rod diameters.
Solution Approach 2:
The anchor utilizes threaded sections with different thread pitch parameters to accommodate different rod diameters. By varying the thread pitch while maintaining a unified external interface, the anchor can engage with threaded rods of different sizes using a single device design, changing the internal thread geometry parameter to match the external rod parameter.
3Adaptability or versatility
If the plunger is designed with multiple threaded sections for different rod diameters, then the adaptability increases, but the manufacturing complexity increases
Solution Approach 1:
The plunger is constructed from two separate plunger halves that are joined together along a split line. Each half can be manufactured independently with simpler geometry, and then assembled into the complete plunger with multiple threaded sections. This segmentation reduces the manufacturing complexity of each individual component while achieving the overall multi-diameter capability.
4Reliability
If the threads transition from deepest points farthest from split lines to shallowest points adjacent to split lines, then the engagement reliability improves, but the manufacturing precision requirements increase
Solution Approach 1:
The thread geometry is designed with varying depth characteristics at different locations: deepest points are positioned farthest from the split lines to maximize engagement reliability, while shallowest points are adjacent to the split lines where the plunger halves join. This local variation in thread quality optimizes the mechanical engagement at each position while accommodating the structural requirements of the split plunger design.
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 effectively secures threaded rods of different diameters, reducing the need for multiple anchor sizes and simplifying installation processes, while ensuring strong axial loading resistance.
Implementation Method 1
a biasing member secured by the back plate to provide a biasing force that urges the plunger toward the second end of the internal bore
Data Source
AI summary
A threaded rod locking device can include a housing defining an internal bore and a plunger within the internal bore. The plunger can include a first plunger body having a first threaded section and a second plunger body having a second threaded section, the first and second plunger bodies being movably received within the internal bore. The rod locking device can further include a passage to axially receive and secure threaded rods within the housing, the passage defined by the first and second threaded sections, with an ovular cross-section when the plunger is in a closed configuration and a circular cross-section when the plunger is in an open configuration, and a biasing member arranged within the internal bore to provide a biasing force that urges the plunger into the closed configuration, the plunger being movable against the biasing force to transition from the closed configuration to the open configuration.