Engine Damper Locking Tool for Single-Person High-Torque Service
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Solution Overview
Problem
The existing tools for locking and unlocking the screw that connects the torsional vibration damper pulley to the crankshaft require two people due to insufficient robust reaction points and high tightening/un-tightening torque, making the process inefficient and resource-intensive.
Innovation Solution
A tool with an elongated body featuring engagement pins at one end for secure attachment to the torsional vibration damper and a mounting mechanism at the other end, allowing single-person operation by preventing the crankshaft and damper from rotating during screw torque application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional tool design is used for locking and unlocking the torsional vibration damper screw, then the tool can be operated, but it requires two people due to insufficient robust reaction points and high torque requirements
Solution Approach 1:
The tool body is divided into distinct functional segments: a first reaction point for mounting to the engine, a second reaction point for engaging the damper, and a torque application point for the screw. This segmentation allows each point to be optimized for its specific function, with the first and second reaction points providing robust mounting locations that distribute and manage the high forces involved, enabling single-person operation.
Solution Approach 2:
The tool utilizes a spatial arrangement where the first reaction point is positioned at a distance from the second reaction point, creating a lever arm that provides mechanical advantage. The elongated tool body extends in a dimension that allows the operator to apply torque at one end while the reaction points are positioned to resist the forces, transforming the force application geometry to reduce the effort required by a single operator.
2Productivity
If a traditional tool design is used, then the tool can apply the required torque, but the process consumes excessive time and resources due to requiring two people
Solution Approach 1:
The tool is designed to be self-sufficient for single-person operation. The first reaction point mounts to a stationary part of the engine, providing a fixed reference that eliminates the need for a second person to stabilize the tool. The tool's geometry and reaction point arrangement allow it to self-support the high forces generated during torque application, enabling one operator to complete the locking or unlocking operation independently and efficiently.
3Strength
If the tool body is made robust enough to handle high torque, then sufficient reaction points can be provided, but the tool becomes more complex and difficult to maneuver
Solution Approach 1:
The tool body is designed with local reinforcement at specific locations where high forces are concentrated, particularly at the first and second reaction points. Rather than making the entire tool body uniformly robust and heavy, the structure is optimized to provide maximum strength only where needed for torque handling, while other portions remain lightweight and maneuverable. This localized strengthening allows the tool to handle high torque requirements without excessive overall complexity.
Data Source
AI summary
A tool for locking/unlocking a torsional vibration damper screw to/from a crank shaft of an engine includes an elongated tool body having a first end and a second end. The first end of the tool body includes a pair of engagement pins sized and spaced for engaging a pair of apertures in the torsional vibration damper. The second end of the tool body includes an aperture for receiving a fastener for engaging the second end to a mounting location on the engine. A spacer element can be utilized for mounting the second end of the tool body to the engine mounting location.