Multi-stage Hydraulic Tool for Extended Reach
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Solution Overview
Problem
There is a need for versatile, portable, and reliable conductor tools that can perform operations like crimping or cutting at a distance from the operator, particularly for electric utilities using metal conductor overhead electrical wires.
Innovation Solution
A hydraulic tool system utilizing a first and second fluid actuation system, where the displacement of a first fluid by a pump activates a first actuator, which in turn displaces a second fluid to operate a tool head, enabling extended reach and reliable manipulation, such as crimping or cutting, through a handle with a trigger and extension mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a single-stage hydraulic system is used, then the device complexity is reduced, but the extended reach and operational distance are limited
Solution Approach 1:
The hydraulic system is divided into two separate stages: a first hydraulic actuator and a second hydraulic actuator. The first actuator displaces fluid to move the second actuator, which in turn operates the tool head. This segmentation allows the system to achieve extended operational distance while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent implements a nested hydraulic configuration where the first hydraulic actuator is positioned within or alongside the second hydraulic actuator. The first actuator's piston rod connects to the second actuator's piston, creating a telescopic arrangement that extends the operational reach while keeping the overall structure compact and manageable.
2Length of moving object
If a multi-stage hydraulic system is used, then the extended reach is improved, but the device complexity increases
Solution Approach 1:
The first hydraulic actuator serves dual functions: it acts as both a functional component for initial movement and as a mechanical linkage to drive the second actuator. The piston rod of the first actuator directly connects to and moves the piston of the second actuator, eliminating the need for separate transmission mechanisms and reducing overall system complexity.
Solution Approach 2:
The patent combines the hydraulic fluid displacement function with the mechanical extension function in the first actuator. By having the first actuator's piston rod directly drive the second actuator's piston, the system merges fluid power transmission with mechanical extension, reducing the number of separate components needed.
3Adaptability or versatility
If the tool head is positioned at a distance from the operator, then the operational versatility is improved, but the control precision and reliability may deteriorate
Solution Approach 1:
The patent uses a fully hydraulic control system where fluid pressure transmitted through sealed conduits provides precise and reliable control of the tool head operations. The hydraulic system maintains consistent force transmission over the extended distance, ensuring reliable conductor manipulation regardless of the tool head's position.
Solution Approach 2:
The first hydraulic actuator serves as an intermediary mechanism between the operator's trigger input and the tool head operations. It translates the operator's small movements into larger, controlled movements of the second actuator, providing mechanical advantage and enhanced control precision over the extended operational distance.
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 hydraulic tool system provides a portable, efficient, and reliable means for performing operations like crimping or cutting at a distance, enhancing operational versatility and safety for electric utility applications.
Implementation Method 1
The pump is activated by the trigger to displace a first fluid. The first actuator is moveable by the displacement of the first fluid to displace a second fluid. The second actuator is moveable by the displacement of the second fluid to cause activation of a tool head.
Data Source
AI summary
A hydraulic tool includes a handle having a trigger, a tool head, a tool body, a pump, a first actuator, a second actuator, and a conduit. The tool head has a first jaw and a second jaw. The tool body includes a first portion, an extension, and a second portion positioned between the handle and the tool head. The pump is activated by the trigger to displace a first fluid. The first actuator is moveable by the displacement of the first fluid to displace a second fluid. The second actuator is moveable by the displacement of the second fluid to cause movement of at least one of the first and second jaws. A conduit provides fluid communication between the first actuator and the second actuator.