Motor-Driven Wire Tensioning Expander With Removable Power Unit
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Solution Overview
Problem
Existing wire tensioning devices require significant manual effort to rotate bolts, making the process cumbersome and inefficient.
Innovation Solution
An expander device equipped with a power part that includes a motor to rotate an engagement portion, allowing for easy and accurate wire tensioning through a removable power unit that engages with an operation portion, facilitating expansion and contraction of the expander body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual rotation of a bolt is used to operate the expander, then the device structure remains simple, but the operation requires great force and is cumbersome
Solution Approach 1:
The patent replaces the manual mechanical rotation system with a motor-driven power part. The motor automatically rotates the screw shaft to drive the nut, eliminating the need for manual bolt rotation while maintaining the core mechanical expansion function through automated power assistance.
Solution Approach 2:
The power part acts as an intermediary between the control system and the mechanical expansion mechanism. It includes a motor that rotates an engagement portion, which then engages with the screw shaft to transmit rotational motion, serving as a mediator that converts electrical power into mechanical motion for the expander.
2Productivity
If a power part is added to automate the rotation, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The expander is divided into distinct functional modules: the main expander body and a separate removable power part. This segmentation allows the power assistance system to be added as an independent unit, improving productivity without permanently complicating the base device structure, and enabling the power part to be removed when not needed.
Solution Approach 2:
The power part is designed to be removably mounted to the expander body, allowing the system to dynamically change its configuration. The power part can be attached when automated operation is needed and removed when manual operation is sufficient, providing flexible adaptability that balances productivity improvement with device simplicity.
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
Enables quick and safe wire tensioning operations with reduced manual effort, improving workability and safety by allowing a single worker to perform tasks that previously required two, and providing precise control over tension application.
Implementation Method 1
a motor configured to rotate the engagement portion
Implementation Method 2
a moving portion including a screw shaft inserted through the outer cylinder portion and the inner cylinder portion, and a nut fixed to another end of the inner cylinder portion in the axial direction and screwed with the screw shaft
Data Source
AI summary
An extension/contraction device that is used when tensioning a wire is provided. This extension/contraction device comprises an extension/contraction device body and a power unit. The extension/contraction device body has: an outside tubular part; an inside tubular part inserted into the outside tubular part from one axial end thereof; a moving part that has a threaded shaft that passes through the outside tubular part and the inside tubular part, and a nut that is fixed to the other axial end of the inside tubular part and is screwed onto the threaded shaft; and an operating part that rotates the threaded shaft about the center axis to move the nut along the threaded shaft. The power unit is detachably attached to the extension/contraction device body. An engagement part that engages with the operating part, and a motor for rotating the engagement part, are also provided.