Hydraulic Wrench Safety Ring Prevents Piston Ejection
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Solution Overview
Problem
Traditional hydraulically powered wrenches lack adequate safety features, leading to potential housing rupture due to material faults or fatigue, causing components to be ejected at high speeds and posing risks of property damage and bodily harm.
Innovation Solution
The apparatus incorporates a safety mechanism with a safety ring and hydraulic piston eject assembly to prevent component detachment and ejection, along with a dual-reaction assembly, auto-release safety reaction pawl, quick-coupler with thread lock, and cycle counter assembly for enhanced safety and efficiency in tightening or loosening threaded fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hydraulic wrenches are used for tightening fasteners, then torque application is achieved, but housing rupture can occur due to material faults or fatigue causing component ejection
Solution Approach 1:
The patent incorporates a safety ring with a retaining lip that extends inwardly to prevent piston ejection before failure occurs. This safety feature is built into the end cap assembly structure, providing preemptive protection against component ejection in case of housing rupture or material fatigue.
Solution Approach 2:
The safety ring acts as an intermediary component between the piston and the end cap assembly. It provides a retaining function that mediates the potential harmful interaction between the piston and external environment, preventing ejection while allowing controlled movement during normal operation.
2Force
If hydraulic pressure is increased to improve tightening capability, then torque increases, but housing fracture risk increases
Solution Approach 1:
The safety ring with retaining lip provides preemptive protection against housing fracture by preventing piston ejection even if the housing fails under excessive hydraulic pressure. This allows the system to operate at high pressures without the added risk of component ejection.
3Reliability
If safety features are added to prevent component ejection, then safety improves, but device complexity increases
Solution Approach 1:
The safety ring is integrated into the end cap assembly structure, merging the safety function with the existing structural components. The retaining lip is formed as part of the safety ring itself, combining retention and structural support functions into a single integrated element rather than adding separate safety mechanisms.
Solution Approach 2:
The safety ring serves multiple functions: it acts as a structural component of the end cap assembly, provides the retaining function to prevent piston ejection, and maintains the hydraulic seal. This multi-functionality reduces overall device complexity by eliminating the need for separate safety mechanisms.
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 safety mechanism effectively prevents component ejection and enhances operational safety and efficiency by allowing for easy configuration, preventing accidental disconnections, and tracking usage for preventative maintenance, thereby reducing the risk of injury and damage.
Implementation Method 1
a hydraulic piston eject safety assembly intended to identify the failure of the apparatus owing to a material fault or overuse/fatigue, which causes the housing to fracture, further portions of the piston assembly, end cap assembly, and/or housing are disengaged from, slip out of, and/or ejected from the apparatus when the housing fractures
Data Source
AI summary
The present discloses an apparatus for transmitting torque and tightening or loosening threaded fasteners. The apparatus comprising a housing having a driving assembly and a cylinder assembly, a ratchet mechanism being arranged in the driving assembly which is further associated and drivable by the cylinder assembly. The cylinder assembly further comprises a piston assembly and an end cap assembly having a safety ring and a hydraulic cylinder assembly. The apparatus further comprises a hydraulic piston eject safety assembly intended to identify the failure of the apparatus owing to a material fault or overuse/fatigue. The apparatus may further comprise a leakage safety assembly configured to prevent hydraulic fluid from leaking at opening. The apparatus may further comprise a dual reaction assembly, a fastener, a socket, a driver a reaction fixture, an auto-release safety reaction pawl assembly, a quick coupler with thread lock assembly, a cycle counter assembly.